EP1740112A1 - Ensemble vis - Google Patents

Ensemble vis

Info

Publication number
EP1740112A1
EP1740112A1 EP05735206A EP05735206A EP1740112A1 EP 1740112 A1 EP1740112 A1 EP 1740112A1 EP 05735206 A EP05735206 A EP 05735206A EP 05735206 A EP05735206 A EP 05735206A EP 1740112 A1 EP1740112 A1 EP 1740112A1
Authority
EP
European Patent Office
Prior art keywords
base
support
receiver
arm
arms
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Withdrawn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
EP05735206A
Other languages
German (de)
English (en)
Inventor
Aaron D. Markworth
Hugues F. Malandain
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.)
Medtronic PLC
Original Assignee
Kyphon 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
Priority claimed from US10/825,962 external-priority patent/US7648520B2/en
Priority claimed from US11/027,501 external-priority patent/US7811311B2/en
Priority claimed from US11/027,500 external-priority patent/US7789899B2/en
Application filed by Kyphon Inc filed Critical Kyphon Inc
Publication of EP1740112A1 publication Critical patent/EP1740112A1/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Withdrawn legal-status Critical Current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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7007—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit around the screw or hook heads
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
    • 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
    • A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
    • 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
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
    • A61B17/7082—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws
    • 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
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
    • A61B17/7085—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements for insertion of a longitudinal element down one or more hollow screw or hook extensions, i.e. at least a part of the element within an extension has a component of movement parallel to the extension's axis
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
    • 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
    • A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole

Definitions

  • This invention relates to medical devices.
  • spinal stabilization/fixation devices to align or position specific vertebra or a region of the spine.
  • a spinal fixation element comprised of a relatively rigid member such as a plate, board or rod that is used as a coupler between adjacent vertebrae.
  • a spinal fixation element can effect a rigid positioning of adjacent vertebrae when attached (e.g. to the pedicle portion of the vertebra) using bone anchorage screws (e.g. pedicle screws).
  • Spinal fixation elements may be introduced posteriorly to stabilize the various vertebrae of the spine, for example, in conjunction with a kyphoplasty procedure wherein a void or cavity is made inside a vertebral body followed by filling with a bone substitute to form an "internal cast.”
  • Some conventional devices for this purpose are designed to be attached directly to the posterior of the spine, but the generally invasive nature of a conventional posterior approach used to implant these devices poses drawbacks.
  • One minimally invasive solution to the problem of the posterior approach involves making a longitudinal separation of the sacrospinalis group between the multifudus and longissimus utilizing the natural cleavage plane between these two muscles rather than detaching the paraspinal muscles from the posterior spinal elements.
  • the invention provides a medical device for supporting a structure comprising a screw assembly.
  • the screw assembly includes a base, an arm, and an interconnection means for coupling the base to the arm.
  • the interconnection means allows the arm to be positionable in a first position that is parallel to a long axis of the base and positionable in a second position that is perpendicular to the long axis of the base.
  • the base is configured for attachment to a structure in a patient and the arm configured for attachment to a support structure.
  • the structure attached to is bone.
  • the device can include a support structure and the screw assembly can be attached to the support structure by the arm.
  • the screw assembly can be attached to the support structure by the arm.
  • two screw assemblies can be attached to the support structure.
  • the screw assembly can be comprised of a material selected from the group consisting of titanium, stainless steel, carbon fiber, shape memory metal, a biocompatible material and a reabsorbable material and a composite or combination thereof.
  • the screw assembly can be comprised of a continuous piece of shape memory metal.
  • the interconnection means is comprised of shape memory metal.
  • the screw assembly, including the interconnection means is comprised of a piece of metal suited for bending.
  • the screw assembly can be of varying lengths, including an overall length in the range substantially between 0.1 and 100 centimeters. In one implementation, the overall length is in the range substantially between 50 and 600 millimeters. In another implementation, the screw assembly has an overall length sized for subcutaneous support of the spine. In yet another implementation, the screw assembly has an overall length sized for subcutaneous support of the posterior of a spine.
  • the arm of the screw assembly can be comprised of a body, a base yoke and a connector end.
  • the body of the arm can be any of a number of shapes including rod shaped.
  • the base of the screw assembly can be comprised of a base head and an anchor.
  • the anchor can be selected from the group consisting of a screw, staple, hook or nail.
  • the anchor is a screw configured for bone anchoring.
  • the anchor is a screw configured for insertion into the pedicle of a vertebrae.
  • the interconnection means of the screw assembly can be of any of a number of configurations.
  • the interconnection means includes a press-fit cross pin.
  • the interconnection means is comprised of an open saddle head and coupling cross piece.
  • the interconnection means can also include a setscrew, wherein the setscrew holds the arm and the base together as a single unit. Additionally, the setscrew can be tightened within the interconnection means to effect locking of the arm in a position that is substantially perpendicular to the long axis of the base.
  • the locking means can also include a cam that can function analogously to the setscrew.
  • the device can be comprised of one screw assembly and a support structure, wherein the support structure includes a top surface, a bottom surface, an aperture and two receivers.
  • the aperture can pass from the top surface through to the bottom surface of the support structure, wherein an anchor is disposed within the central aperture in an orientation substantially perpendicular to the top surface of the support structure.
  • the support structure of the device can be comprised of a top surface, a bottom surface and two receivers.
  • Each receiver can include an open-ended saddle type receiver configured for attachment of one or more medical devices.
  • each receiver can include a locking means.
  • the locking means can be a setscrew or cam.
  • the locking means can be oriented within the plane of the top surface such that access to the locking means is from the top surface.
  • the support structure can be configured to receive the medical devices and lock the medical devices to the support structure after the support structure has been installed.
  • the support structure can be comprised of a material selected from the group consisting of titanium, stainless steel, carbon fiber, a biocompatible material, a reabsorbable material and a composite or combination thereof. Additionally, the support structure can include a central aperture passing from the top surface through to the bottom surface of the support structure. An anchor can be disposed within the central aperture in an orientation substantially perpendicular to the top surface of the support structure. Alternatively, the support structure can include a central hinged claw having a threaded hinge-engagement member and nut disposed on the top surface. In use, tightening the nut onto the threaded hinge-engagement member causes a pivoting about the hinge to effect closing of the claw.
  • the device can be comprised of two screw assemblies and a support structure, wherein each screw assembly includes a base, an arm, and an interconnection means for coupling the base to the arm.
  • the interconnection means allows the arm to be positionable in a first position that is parallel to a long axis of the base and positionable in a second position that is perpendicular to the long axis of the base.
  • the base can be configured for attachment to a structure in a patient and the arm configured for attachment to the support structure.
  • the structure attached to is bone.
  • the support structure can include a top surface, a bottom surface and two receivers, wherein each receiver includes an open-ended saddle type receiver configured for attachment to a medical device (e.g., screw assembly).
  • the support structure can also include a locking means, to lock medical devices to the support structure after the support structure has been installed in a patient.
  • the locking means can be setscrews or cams.
  • the support structure in this implementation can include an anchor configured for attachment to a structure in a patient.
  • the structure attached to in a patient is bone.
  • the anchor can be selected from the group consisting of a screw, staple, hook or a nail.
  • a method of use of one aspect of the invention for supporting the spine can include the steps of: 1) delivering to bone, two screw assemblies having arms, bases and interconnection means; 2) delivering to the vicinity of bone, a support structure having two receivers having locking means for the arms of the screw assemblies; 3) deploying the arms of the screw assemblies; and 4) engaging the locking means of the receivers to secure the arms of the screw assemblies to the support structure.
  • Another method of use of one aspect of the invention for supporting the spine can include the steps of: 1) delivering to bone, two screw assemblies having arms, bases and an interconnection means; 2) delivering to bone, a support structure having a central aperture with a locking means and an anchor, and two receivers having a locking means for the arms of the screw assemblies; 3) deploying the arms of the screw assemblies; and 4) engaging the locking means of the receivers to secure the arms of the screw assemblies to the support structure.
  • Yet another method of use of one aspect of the invention for supporting the spine can include the steps of: 1) delivering to bone, a screw assembly having an arm, a base and an interconnection means; 2) delivering to bone, a support structure having a central aperture with a locking means and an anchor, and a receiver having a locking means for the arm of a screw assembly; 3) deploying the arm of the screw assembly; and 4) engaging the locking means of the receiver to secure the arm of the screw assembly to the support structure.
  • the medical device support structure can include an anchor, a receiver, and a locking means; wherein the anchor is configured for attachment to a structure in a patient.
  • the receiver can include an open end for attachment to a medical device (e.g., a screw assembly).
  • the locking means can be configured to lock the medical device to the support structure, after the support structure has been deployed in a patient, hi one implementation, the structure is bone.
  • the locking means can be a setscrew or a cam.
  • the anchor can be selected from the group consisting of a screw, staple, hook or nail.
  • the receiver can include a plurality of receivers for receiving medical devices.
  • the invention features a medical device for supporting a structure comprising a screw assembly including a base and an arm.
  • the arm can be a support configured for receiving one or more anchor assemblies that include a means for locking the anchor assemblies to the support.
  • the support includes a top portion and a bottom portion, and an interconnection means for coupling the base to the support.
  • the interconnection means allows the support to be positionable in a first position that is substantially parallel to a long axis of the base and secondarily positionable substantially perpendicular to the long axis of the base.
  • the base and the one or more anchor assemblies are configured for attachment to a structure in a patient.
  • Implementations of one aspect of the invention can include one or more of the flowing features.
  • the structure supported by the device can be bone selected from the group including a vertebra, femur, tibia, fibula, humerus, radius, ulna, calcaneous, and a pelvis.
  • the screw assembly of the device can have an overall length sized for subcutaneous support of the posterior of a spine.
  • the base of the screw assembly can be comprised of a base head having a shape and a locking means and an anchor.
  • the base head shape can be an open saddle- type head.
  • the locking means of the base can be comprised of a setscrew, wherein the setscrew is configured to link the support and the base, and wherein tightening the setscrew effects locking of the support in a position relative to a long axis of the base.
  • the anchor of the base can be selected from the group including a screw, staple, nail, hook and a pin.
  • the anchor is a screw configured for bone anchoring.
  • the anchor is a screw configured for insertion into the pedicle of a vertebra.
  • the support of the device can have a shape selected from the group including a board, plate, elongated cross-section, oval, square, I-beam and a rod.
  • the support can include a connector end, one or more apertures, and a receiver.
  • the connector end can be configured for interconnection of the support and the base of the screw assembly.
  • the connector end is configured for hinge-type interconnection of the support and the base of the screw assembly.
  • the one or more apertures of the support can include a first connector end proximal aperture having a dimensional configuration to support a range of movement of the base in relation to the support.
  • the apertures can further include one or more second connector end distal apertures for providing access to the base and the means for locking the anchor assembly to the support, when assembled with the support.
  • the support can include a support member having a top portion and a bottom portion, a head assembly, and an interconnection means.
  • the support member can include a receiver, and one or more apertures.
  • the one or more apertures include a first aperture wherein an anchor assembly is passable therethrough and lockably engagable with the support member, and a second aperture wherein access is provided from the top portion of the support member to access the head assembly.
  • the head assembly of the support can include a connector end, an aperture having a dimensional configuration supporting a range of movement of the base in relation to the support, and a connector end proximal aperture having a dimensional configuration to support a range of movement of the base in relation to the support.
  • the head assembly can also include a locking means for securing the head assembly to the support member, wherein the head assembly is configured for interconnection with the support member.
  • the invention features a method of supporting a bony structure, the method including the steps of: 1) delivering to bone a screw assembly comprising a support having a receiver, a base, an interconnection means, and a locking means; 2) deploying the support substantially perpendicular to the long axis of the base; 3) passing through the support and implanting one or more anchor assemblies having a base and a locking means into bone; 4) locking the bases within one or more of the anchor assemblies; 5) locking one or more of the anchor assemblies within the support receiver; and 6) engaging the locking means of the screw assembly to secure the position of the support in relation to the base.
  • the invention features a method of supporting a bony structure, the method comprising the steps of: 1) delivering to bone a screw assembly including: a support comprising a support member having a receiver, a head assembly having a connector end, an interconnection means and a locking means for securing the head assembly to the support member; a base; an interconnection means, and a locking means for securing the support in a position in relation to the base; 2) deploying the support substantially perpendicular to the long axis of the base; 3) passing through the support and implanting one or more anchor assemblies having a base and a locking means into bone; 4) locking the bases within one or more of the anchor assemblies; 5) locking one or more of the anchor assemblies within the support receiver; 6) locking the head assembly within the support member; and engaging the locking means of the screw assembly to secure the position of the support in relation to the base.
  • the invention features a medical device for supporting a structure including a screw assembly having a base, one or more arms, and an interconnection means for coupling the base to the one or more arms.
  • the interconnection means allows the one or more arms to be positionable in a first position that is substantially parallel to a long axis of the base, and secondarily positionable substantially perpendicular to the long axis of the base.
  • the base is configured for attachment to a structure in a patient and the one or more arms are configured for attachment to one or more support structures.
  • Implementations of one aspect of the invention can include one or more of the following features.
  • the structure in a patient can be bone.
  • the screw assembly can have an overall length sized for subcutaneous support of the posterior of a spine.
  • the base of the screw assembly can include a base head and an anchor.
  • the interconnection means of the screw assembly can include the base head of the screw assembly, and the base head can include a receiver and a setscrew.
  • the setscrew secures the base to the one or more arms of the screw assembly.
  • tightening the setscrew effects locking of the one or more arms in a position in relation to the base of the screw assembly.
  • the interconnection means includes the base head of the screw assembly and the base head includes a hinge means.
  • the one or more arms of the device can include a body, wherein the body has an elongate shape and includes a connector end for attachment to a support structure, and a receiver end for connection to the base head receiver portion of the interconnection means.
  • the elongate shape of the arm body can include an offset section, wherein the offset section is configured to provide a linear alignment of the base and the arm body when the arm is positioned substantially parallel to a long axis of the base.
  • the elongate shape of the arm body is a shape configured for fitted interrelation between two or more arms positioned in a first position that is substantially parallel to a long axis of the base.
  • the receiver end of the one or more arms and the receiver portion of the base head include a hinge means.
  • a means is provided for locking the arm into a position substantially perpendicular to the long axis of the base.
  • the means provided for locking the arm can include a one-way ratchet, a setscrew or a cam.
  • the screw assembly of the device can include two arms and the receiver ends of the two arms can be configured for interconnection.
  • one of the receiver ends of the two arms includes a first collet-type receiver end having a substantially cylindrical recess, and the other receiver end of the two arms includes a substantially cylindrical shape for interconnection with the first collet-type receiver.
  • one of the receiver ends of the two arms can include a first collet-type receiver end having a substantially spherical recess, and the other receiver end of the two arms can include a substantially spherical shape for interconnection with the first collet-type receiver.
  • the invention can include the following feature.
  • the one or more support structures of the device can include an anchor, an aperture configured for attachment of an arm of the screw assembly, and a locking means configured to lock the arm of the screw assembly to the support structure.
  • the invention can include the following feature.
  • the interconnection means of the screw assembly can include a binge, a pin or a collet.
  • the invention features a method of supporting the spine, the method comprising the steps of: 1) delivering to bone a screw assembly having one or more arms, a base and an interconnections means; 2) delivery to flanking bone one or more support structures having an aperture and locking means for the arms of the screw assembly; 3) deploying the one or more arms of the screw assembly to the flanking support structures; 4) locking the one or more arms of the screw assembly in a desired position; and 5) engaging the locking means of the support structure aperture.
  • the support and screw assembly can be pre-loaded together. As such there is no need to connect the support and screw assembly at the surgical site.
  • Use of the invention requires few user manipulations.
  • the screw assembly can first be inserted into the pedicle of a vertebrae.
  • the support which is connected by an interconnection means to the screw assembly can be deployed to a desired position.
  • one or more anchor assemblies can be added to the support for attachment to additional vertebrae.
  • the offset section of the arm body can be configured to provide a low-profile to the screw assembly when the one or more arms are positioned substantially parallel to a long axis of the base.
  • the low profile is advantageous since it facilitates placement of the screw assembly and arms of the device as a single unit, in a minimally invasive manner, through for example, a narrow access channel, port or cannula.
  • FIG. 1 A is a drawing of a screw assembly showing the screw assembly, arm and base in a first position.
  • FIG. IB is a drawing showing the screw assembly in a second position.
  • FIG. IC is a drawing showing the screw assembly including a press-fit cross pin-type interconnection means.
  • FIG. ID is a drawing showing an open saddle-type base head.
  • FIG. IE is a drawing showing an integrally disposed crosspiece.
  • FIG. IF is a drawing showing a press-fit cross pin.
  • FIG. 2A is a drawing showing a support structure.
  • FIG. 2B is a drawing showing the support structure including a central aperture and an anchor.
  • FIG. 2C is a drawing showing the support structure including a hinged claw.
  • FIG. 3 A is a drawing showing two screw assemblies connected by a support structure.
  • FIG. 3B is a drawing showing two screw assemblies connected by a support structure implanted into the pedicles of the vertebrae of the spine.
  • FIG. 4 is a drawing showing one screw assembly connected to a support structure having a central aperture and an anchor.
  • FIG. 5 is a drawing showing one screw assembly connected to a base having an open saddle-type head.
  • FIG. 6 is a drawing showing caimulas and a support structure tool used for implanting the screw assembly and support structure.
  • FIG. 7 is a drawing of a screw assembly tool used for manipulating the screw assembly during implantation of the screw assembly in the spine.
  • FIG. 8 A is a drawing of a support assembly.
  • FIGS. 8B-C are drawings of a screw assembly having a base and a support, illustrating the interconnection between the base and the support such that the support is positioned substantially parallel (FIG. 8B) or perpendicular (FIG.8C) to a long axis of the base.
  • FIG. 8D is a drawing of a support.
  • FIG. 9 A is a drawing of an alternative support assembly.
  • FIGS. 9B-9E are drawings of a screw assembly.
  • FIG. 10A is a drawing showing a cutaway view of an anchor assembly prior to being secured within the support.
  • FIG. 10B is a drawing showing a cutaway view of an anchor assembly after being secured within the support.
  • FIG. 11 A- 11 C are drawings of a screw assembly.
  • FIG. 1 ID is a cross-sectional drawing of a screw assembly.
  • FIG. 11 E is a drawing of a screw assembly.
  • FIGS. 12A and 12B are cross-sectional drawings of a screw assembly.
  • FIG. 12C is a drawing of a screw assembly showing a spherical-shaped collet-type connection between two arms and a cross-sectional view of a base.
  • FIG. 12D is a cross-sectional drawing of a screw assembly showing a spherical-shaped collet-type connection between two arms.
  • FIG. 13 A is a drawing of a support assembly showing a screw assembly having one arm and a base attached to a support structure.
  • FIG. 13B is a drawing of a support assembly showing a screw assembly having two arms and a base attached to two support structures.
  • FIG. 14 is a drawing showing a support assembly implanted into the pedicles of the vertebrae of a spine.
  • a screw assembly 1 is provided comprised of an arm 2 and a base 3 in a single unit.
  • the screw assembly 1 is elongate and the arm 2 and base 3 of the screw assembly 1, are coupled by an interconnection means 4.
  • the interconnection means 4 facilitates movement between the arm 2 and the base 3, such that the arm 2 is positionable in a first position that is parallel to a long axis of the base 3 (shown in FIG. 1 A) and positionable in a second position that is perpendicular to the long axis of the base 3 (shown in FIG. IB).
  • the base 3 of the screw assembly 1 is configured for attachment to a structure (e.g., a bone) and the arm 2 is configured for attachment to a support structure 10 (described in detail below).
  • a structure e.g., a bone
  • the arm 2 is configured for attachment to a support structure 10 (described in detail below).
  • one or more screw assemblies 1 are attached to a support structure 10 (not shown).
  • two screw assemblies 1 are attached to a single support structure 10.
  • the arm 2 and base 3 of the screw assembly 1 are configured as one continuous piece of shape memory metal.
  • the interconnection means 4 is comprised of a shape memory metal that can facilitate movement of the arm 2 relative to the base 3 depending on preset conditions affecting the shape memory metal shape (not shown).
  • the arm 2 and base 3 of the screw assembly 1 are configured as one continuous piece wherein the interconnection means 4 between the arm 2 and base 3 is comprised of a material suited for bending (not shown).
  • the arm 2 feature of the screw assembly 1 is comprised of a body 17, base yoke 18 and a connector end 12.
  • the body 17 of the arm 2 can vary in shape and length with the application.
  • the body 17 of the arm 2 is rod-shaped (see FIGS. 1 A and IB).
  • the arm 2 body 17 is shaped to substantially fit within a screw assembly tool for manipulating the screw assembly 1. An example of such a screw assembly tool 19 is illustrated in FIG 7.
  • the screw assembly 1 can be made of numerous materials that are durable and that can be implanted in a body, including titanium, stainless steel, carbon fiber, biocompatible material, etc.
  • the screw assembly 1 is made of titanium.
  • the screw assembly 1 can be made of a reabsorbable material or shape memory metal.
  • the screw assembly 1 can be a composite or combination of any of the foregoing.
  • the dimensions of the screw assembly 1 vary with the application. In general, the length of the screw assembly 1 is from 0.1 to 100 centimeters. In one implementation, the length is substantially between 50 and 600 millimeters. In another implementation, the screw assembly 1 is sized for applications involving support of the posterior of the spine 28 (see FIG. 3B).
  • the base 2 of the screw assembly 1 is comprised of a base head 20 and an anchor 14.
  • the anchor 14 can be a screw, staple, hook or nail and can be of a type typically used for bone anchoring.
  • the anchor 14 is a screw of a type for insertion into a pedicle 26 of a vertebrae 27 (see FIG 1A and 3B).
  • the base head 20 is a press-fit cross pin-type head 5, and the yoke 18 of the arm 2 includes a pin hole 25, wherein the arm 2 and base 3 are pre-assembled including a press-fit cross pin (not shown) and a setscrew 9 (not shown).
  • the interconnection means 4 of FIG. lA is configured as an open saddle head with coupling-cross piece.
  • the base head 20 is configured as an open saddle-type head 6 (shown in FIG. ID), which is pre-assembled with a complementary arm 2 feature.
  • the arm 2 feature that is complementary to the open saddle-type head 6 can be a one-piece integrally disposed crosspiece 7.
  • the complementary arm 2 feature can be a press-fit cross pin 8.
  • the arm 2 and base 3 can be held together as a single unit by the set screw 9 where the interconnection means 4 is of the form of a press-fit cross pin-type or an open saddle-type head with a coupling cross piece.
  • the open saddle-type head is threaded to receive the setscrew 9.
  • the setscrew 9 can effect locking of the arm 2 into a fixed position. Prior to moving the arm 2 into the deployed position, the setscrew 9 is loosely set in place. Upon deployment, the arm 2 can be locked in a position that is substantially perpendicular to the long axis of the base 3 by tightening the setscrew 9 into the threaded open saddle head 6 of the base 3 (see FIG. ID).
  • FIGS. 2A-C, 3A, 3B and 4 a support structure 10 is shown to which the connector end 12 of the arm 2 of the screw assembly 1 can be attached (see FIGS. 3A, 3B and 4).
  • the support structure 10 is comprised of a top surface 15, a bottom surface 16, and one or more open-ended saddle receivers 11 including a setscrew 9, or, in the alternative, a cam, for locking.
  • the receiver 11 is shaped to accommodate the connector end 12 of the arm 2 of the screw assembly 1.
  • the setscrew 9 is threaded into the support structure 10, perpendicular to the plane of the top surface 15 of the support structure 10, to facilitate access to the setscrew 9 from above the support structure 10.
  • the support structure 10 is comprised of two receivers 11 (see FIGS. 2A- C, 3 A, 3B and 4), whereby two screw assemblies 1 can be linked together via the support structure 10 (see FIG. 3 A).
  • two screw assemblies 1 linked together via the support structure 10 can be implanted into the pedicles 26 of vertebrae 27 in a spine 28 to effect support of the spine 28.
  • the support structure 10 can be configured to additionally include a central aperture 13 that passes from the top surface 15 of the support structure 10 through to the bottom surface 16 of the support structure 10.
  • the central aperture 13 can be threaded accommodate an anchor 14 and optionally include a setscrew 9 or a cam for locking the anchor 14 in position, i this implementation the threading of the central aperture 13, and receiver 11 setscrew(s) 9, are both aligned perpendicularly to the top surface 15 of the support structure 10.
  • the anchor 14 can be a screw, staple, hook or nail and be of a type typically used for bone anchoring. In one implementation, the anchor 14 is a screw of a type for insertion into the pedicle of a vertebrae.
  • the support structure 10 can optionally include a hinged claw 21 for clamping the support structure 10 onto a surface (e.g., a bony surface).
  • the claw 21 features a hinge 22 positioned between two receivers 11 in the support structure 10.
  • the claw 21 includes a threaded engagement member 23 extending above the top surface 15 of the support structure 10, whereby upon threading a nut (not shown) over the engagement member 23, a pivoting about the hinge 22 is effected and the claw 21 closes.
  • the support structure 10 can be made of numerous materials that are durable and that can be implanted within a body, including titanium, stainless steel, carbon fiber, biocompatible material, etc.
  • the screw assembly 1 is made of titanium.
  • the support structure 10 can be made of a reabsorbable material.
  • the support structure 10 can be a composite or combination of any of the foregoing.
  • another implementation of the invention includes a single screw assembly 1, connected to a support structure 10 having a receiver 11, an anchor 14 and a locking means.
  • the receiver 11 is configured as an open saddle-type head 6.
  • the support structure 10 includes a plurality of receivers 11.
  • the locking means can include a setscrew 9 or alternatively a cam.
  • the connector end 12 of the screw assembly arm 2 is locked into the open saddle-type receiver head 6 of the support structure 10 after the anchor is installed in a patient.
  • the above method includes the use of a special screw assembly tool 19 for manipulation of the screw assemblies 1 (see FIG. 7).
  • the screw assembly tool 19 includes an inner cavity 24 configured to accommodate the un-deployed screw assembly within it.
  • the screw assembly tool 19 facilitates the insertion of the un-deployed screw assembly base into a structure (e.g., bone) from within the confines of a cannula 29 (see FIG. 6).
  • An additional method of use of the invention for supporting the spine can include the steps of: 1) delivering to bone, two screw assemblies having arms, bases and interconnection means; 2) delivering to the vicinity of bone, a support structure having two receivers having locking means for the arms of the screw assemblies; 3) deploying the arms of the screw assemblies; and 4) engaging the locking means of the receivers to secure the arms of the screw assembly to the support structure.
  • Another method of use of the invention for supporting the spine can include the steps of: 1) delivering to bone, two screw assemblies having arms, bases and an interconnection means; 2) delivering to bone, a support structure having a central aperture with a locking means and an anchor, and two receivers having locking means for the arms of the screw assemblies; 3) deploying the arms of the screw assemblies; and 4) engaging the locking means of the receivers to secure the arms of the screw assemblies to the support structure.
  • Yet another method of use of the invention for supporting the spine can include the steps of: 1) delivering to bone, a screw assembly having an arm, base and interconnection means; 2) delivering to bone, a support structure having a central aperture with a locking means and an anchor, and a receiver having locking means for the arm of a screw assembly; 3) deploying the arm of the screw assembly; and 4) engaging the locking means of the receiver to secure the arm of the screw assembly to the support structure.
  • a screw assembly 101 comprising a base 102, a support 103 configured for receiving one or more anchor assemblies 301 and an interconnection means 105 between the base 102 and the support 103.
  • the support 103 includes a top portion 107 and a bottom portion 108 (see FIGS. 8B, 8C, 9D and 9E).
  • the interconnection means 105 allows the support 103 to be positionable in a first position that is substantially parallel to a long axis of the base 102 (see FIGS.
  • the base 102 of the screw assembly 101 and the one or more anchor assemblies 301 are configured for attachment to a structure (e.g. bone) in a patient.
  • a screw assembly 101 receives one or more anchor assemblies 301 to form a support assembly 106 (see FIGS. 8A and 9A).
  • the anchor assembly 301 is combined with the screw assembly 101 after deployment of the support 103 (forming support assembly 106) and in another implementation, the anchor assembly 301 is pre-assembled with the screw assembly 101.
  • One advantage of the invention over the prior art solutions is timesavings when using the support assembly 106 for supporting a structure. Another advantage is relative ease of removal.
  • the support assembly 106 can be used for temporary or permanent implantation.
  • the support assembly 106 once assembled, can be used to support a bony structure.
  • the bony structure supported can include a femur or other bones of the leg (e.g. tibia and fibula), bones of the arm and wrist (e.g. humerus, radius and ulna), and other bones such as the calcaneous, pelvis, spine (vertebrae) and the like.
  • Support can be provided for a single bone (i.e. a long bone such as the femur, tibia, humerus) or for more than one bone (i.e. vertebrae).
  • the screw assembly 101 can be made of materials that are durable and that can be implanted in a body, including titanium, stainless steel, carbon fiber, etc.
  • the screw assembly 101 is made of titanium.
  • the screw assembly 101 is made of abiocompatible material, a reabsorbable material or a combination of any of the foregoing materials.
  • the dimensions of the screw assembly 101 vary with the application. In general, the length of the screw assembly 101 is from 20 to 1,000 millimeters. In one implementation, the length is substantially between 50 and 400 millimeters. In another implementation, the screw assembly 101 is sized for applications involving support of the posterior of the spine (not shown).
  • the base 102 of the screw assembly 101 is comprised of a base head 114 having a shape and a locking means, and an anchor 109a.
  • the shape of the base head 114 can be comprised of any of a number of shapes suitable for receiving or interconnecting with the support 103. h one implementation, the base head 114 shape is an open saddle-type head.
  • the locking means of the base head 114 can be a setscrew 104.
  • the setscrew 104 can be configured to link the support 103 and the base 102 while permitting a freedom of movement between the base 102 and the support 103 (see FIGS. 8A, 9A and 9E).
  • the locking means can effect locking of the support 103 in a position relative to the base 102.
  • the setscrew 104 can be tightened to effect locking of the support 103 in a position relative to (for example, the long axis of) the base 102.
  • the locking means of the base head 114 can be a cam (not shown).
  • the anchor 109a of the screw assembly 101 is can be selected from the group consisting of a screw, staple, nail, hook and pin.
  • the anchor 109a is configured for bone anchoring.
  • the anchor 109a is a screw configured for insertion into the pedicle of a vertebra.
  • the anchor assembly 301 is configured to interconnect with the shape of the receiver 306 (discussed in detail below).
  • the anchor assembly 301 shape can be any of a number of shapes. In some implementations, the mating between the support 103 and the anchor assembly 301 occurs only in two dimensions (e.g. where a 90 degree twisting receiver 306 is employed).
  • the anchor assembly 301 can be comprised of a head 302, a base 109b and a base head 114.
  • the anchor assembly 301 can be comprised of numerous materials that are durable and that can be implanted in a body, including titanium, stainless steel, carbon fiber, etc. Additionally, the anchor assembly 301 can be comprised of a reabsorbable material or a biocompatible material, or a combination of any of the foregoing materials.
  • the anchor assembly 301 includes a means for locking the anchor assembly 301 to the support 103.
  • the means for locking the anchor assembly 301 can be a setscrew 104 threaded into the head 302 of the anchor assembly 301, wherein the head 302 includes a threaded base aperture 305 and a deformable geometry.
  • Such a means for locking an anchor assembly 301 to the support 103 is disclosed in the commonly owned U.S. Application Serial No. 11/019,918. As shown in FIG.
  • the setscrew 104 when the setscrew 104 is turned into the threaded base aperture 305, the deformable head 303 is caused to splay outward such that the T-slot shape of the head 302 engages and locks against the receiver 306 planar medial face 308.
  • the setscrew 104 can be disposed such that it is constrained within the threaded base aperture 305.
  • the constrained setscrew 104 upon final tightening can be over-constrained thereby forcing the deformable head 303 to splay outward.
  • the head 302 may additionally engage the receiver 306 planar upper face 309 or planar lower face 307 or both to effect locking.
  • a cam can be substituted for the setscrew 104 to effect the locking of the anchor assembly 301 within the support 103 (not shown).
  • the deformable geometry of the deformable threaded base aperture 305 can be comprised of a void within the anchor assembly 301 head 302 wherein the void is selected from the list consisting of a cavity, slot notch, groove, cut out, gap and a recess.
  • the void is tapered, hi another implementation as shown in FIGS. 9A and 9A, the void within the anchor assembly 301 head 302, can be a slot 313 cut into the head 302.
  • the anchor assembly 301 includes a base 102 moveably disposed within the threaded base aperture 305.
  • the base 102 can be a screw, staple, hook or nail and of a type typically used for anchoring to a structure (e.g., to a bone), hi one implementation, the base 102 is a screw of a type for insertion into the pedicle of a vertebra. In another implementation, the base 102 can be attached to another bony structure.
  • Attachment of the base 102 to the anchor assembly 301 can be accomplished in numerous ways.
  • the attachment is through a hinge-type of connection between the base 102 and the anchor assembly 301 (see, e.g., as in FIGS. 1A-1B).
  • the attachment is made between a polyaxial-type base head 114 on the base 102 and a complimentary receptacle 304 within the anchor assembly 301 head 302.
  • the anchor assembly 301 further includes a means for locking the base
  • the means for locking can include a setscrew 104 disposed within a threaded base aperture 305.
  • the setscrew 104 can be comprised of a setscrew 104 disposed in a threaded base aperture 305.
  • FIGS . 10 A- 10B another implementation of the anchor assembly 301 includes a longitudinal aperture 312 through the base 102 and base head 114, a tool interface 311 and a setscrew aperture 310.
  • the longitudinal aperture 312 and setscrew aperture 310 are configured such that an instrument, wire (e.g. a K-wire) or other guide can pass through the entire anchor assembly 301.
  • the setscrew aperture 310 is further configured such that a tool or instrument can pass through the setscrew aperture
  • the setscrew 104 can be a cam (not shown).
  • the setscrew aperture 310 can be any shape and can be sized to accommodate the through passage and use of objects and tools without affecting the positioning of the setscrew 104.
  • the longitudinal aperture 312 can have any desired cross-sectional shape including but not limited to round, square, hexagonal, oval or any regular or irregular shape.
  • the tool interface 311 can be any shape suitable for receiving a tool for manipulating the base 102.
  • the base 102 is a screw
  • 311 can be a hex shape, or any other commonly used screw head tool interface shape.
  • the setscrew 104 can be pre-positioned within the base aperture 305 without being tightened.
  • the setscrew aperture 310 and longitudinal aperture 312 (passing through the base 102 and base head 114) enable access through a pre-assembled implementation of the anchor assembly 301. Additionally, wherein the anchor assembly 301 is pre- i assembled, access is provided to the tool interface 311 of the base head 114 through the setscrew aperture 310.
  • the support 103 has a shape.
  • the shape of the support 103 can be selected from the group consisting of a board, plate, elongated cross-section, oval, square, I-beam and a rod. In one implementation, as shown in FIGS. 8 A, 8D, 9 A, 9D and 9E, the support is shaped as a plate. In one implementation, the length of the support 103 is minimally substantially the same length as required to span two or more vertebrae. In one implementation, the support 103 is substantially a length as required to span three vertebrae. In another implementation, the length of the support 103 is substantially between 25 to 140 millimeters. [00109] As shown in FIGS.
  • the support 103 is comprised of a connector end 110, one or more apertures 111, and a receiver 306.
  • the connector end 110 is configured for interconnection of the support 103 and the base 102 of the screw assembly 101.
  • the connector end 110 is configured for hinge-type interconnection of the support 103 and the base 102 of the screw assembly 101.
  • the one or more apertures 111, of the support 103 include a first aperture 111c positioned proximal to the connector end 110, and a second aperture Ilia positioned distal to the connector end 110, in relation to the support 103.
  • the first aperture 111c can provide for a range of movement for the base 102 in relation to the support 103.
  • the movement of the base 102 in relation to the support 103 includes a hinge-type of movement (see FIGS. 8A-8C). As shown in FIG.
  • the second aperture Ilia can provide for access to the base 103 and the means for locking the anchor assembly 301 to the support 103, when the anchor assembly 301 is assembled with the support 103.
  • the second aperture Ilia can provide for access to the support 103 from above after the support 103 is deployed into a position that is substantially perpendicular to the base 102.
  • the receiver 306 is disposed within a long axis of the support 103.
  • the receiver 306 is connected to the top portion 107 or the bottom portion 108 of the support 103.
  • the receiver 306 substantially spans the length of the support 103.
  • the configuration of the receiver 306 can be comprised of any of a number of designs and shapes.
  • the receiver 306 has a configuration selected from the group consisting of a slot, groove, track, dovetail and a snap-in configuration.
  • the receiver 306 has a 90-degree twist-in configuration.
  • the receiver 306 and the anchor assembly 301 are both configured in an interconnecting geometry comprising a T-slot (see FIGS. 10A and 10B).
  • the T-slot configuration of the receiver 306 can be comprised of a planar upper face 309, a planar lower face 307 and a planar medial face 308.
  • the receiver 306 can include two ends wherein one or both ends are open or closed (not shown).
  • the support 103 is comprised of a support member 202, a head assembly 201 and an interconnection means 105 (for example, a slot-flange combination).
  • the support member 202 can include a top portion 107 and a bottom portion 108 and one or more apertures 111 (see FIGS. 9A-9E). As shown in FIGS. 9A-9C, in one implementation the support member 202 includes a receiver 306 and one or more apertures 111.
  • the receiver 306 is disposed within a long axis of the support member 202.
  • the receiver 306 is connected to the top portion 107 or the bottom portion 108 of the support member 202 (for example, as an attachment).
  • the receiver 306 substantially spans the length of the support member 202.
  • the configuration of the receiver 306 can be comprised of any of a number of designs and shapes.
  • the receiver 306 has a configuration selected from the group consisting of a slot, groove, track, dovetail and a snap-in configuration.
  • the receiver 306 has a 90-degree twist-in configuration.
  • the receiver 306 and the head assembly 201 are both configured in an interconnecting geometry comprising a T-slot (see FIGS. 10A and 10B).
  • the T-slot configuration of the receiver 306 can be comprised of a planar upper face 309, a planar lower face 307 and a planar medial face 308.
  • the receiver 306 can include two ends wherein a first end is open and second end is closed (not shown). Alternatively, both ends can be open or both ends can be closed (not shown).
  • the one or more apertures 111, of the support member 202 include a first aperture Ilia wherein an anchor assembly 301 is passable therethrough and lockably engagable with the support member 202.
  • a second aperture 111b can be included wherein access is provided from the top portion 107 of the support member 202, through to the bottom portion 108 of the support member 202 (see FIGS. 9A- 9C).
  • the second aperture 111b can also provide access to the head assembly 201 of the support 103 when the head assembly 201 is interconnected with the support member 202.
  • the head assembly 201 is configured for interconnection with both the support member 202 and the base 102.
  • the head assembly 201 includes a connector end 110, an aperture 111c and a locking means (for example, a flange) for securing the head assembly 201 to the support member 202.
  • the receiver 306 of the support member 202 and the head assembly 201 are configured in an interconnecting geometry comprising a T-slot.
  • the interconnecting geometry between the head assembly 201 and the support member 202 can provide for adjustable positioning (and/or locking) of the support member 202 along the long axis of the head assembly 201 (see FIGS. 9B and 9C). As shown in FIG.
  • the head assembly 201 can be contracted within the support member 202 to reduce the overall length of the screw assembly 101.
  • the head assembly 201 can be extended in relation to the support member 202 to increase the overall length of the screw assembly 101.
  • the connector end 110 of the head assembly 201 can be configured for interconnection of the support 103 and the base 102 of the screw assembly 101.
  • the connector end 110 is configured for hinge-type interconnection of the support 103 and the base 102 of the screw assembly 101 (see FIGS. 9A-9E).
  • the aperture 111 c of the head assembly can have a dimensional configuration to support a range of movement of the base 102 in relation to the support 103.
  • the locking means for securing the head assembly 201 to the support member 202 can be comprised of a setscrew 104 disposed within the head assembly 201. In use, turning the setscrew 104 can result in contact between the setscrew 104 and the support member 202, thereby providing a means to secure the head assembly 201 to the support member 202.
  • the locking means for securing the head assembly 201 to the support member 202 can be comprised of a cam.
  • a method of use of the invention for supporting a bony structure can include the steps of: 1) delivering to bone a screw assembly comprising a support having a receiver, a base, an interconnection means, and a locking means; 2) deploying the support substantially perpendicular to the long axis of the base; 3) passing through the support and implanting one or more anchor assemblies having a base and a locking means into bone; 4) locking the bases within one or more of the anchor assemblies; 5) locking one or more of the anchor assemblies within the support receiver; and 6) engaging the locking means of the screw assembly to secure the position of the support in relation to the base.
  • the method of use described above can include disposing the support adjacent to bone or adjacent to a spine. In one implementation, the method of use described above can include disposing the support with the subcutaneous fat layer of the back. In another implementation, the method of use described above can include disposing the support external to the body.
  • Another method of use of the invention for supporting a bony structure can include the steps of: 1) delivering to bone a screw assembly comprising: a support comprising a support member having a receiver, a head assembly having a connector end and an interconnection means; a base; an interconnection means, and a locking means; 2) deploying the support substantially perpendicular to the long axis of the base; 3) passing through the support and implanting one or more anchor assemblies having a base and a locking means into bone; 4) locking the bases within one or more of the anchor assemblies; 5) locking one or more of the anchor assemblies within the support receiver; 6) locking the head assembly within the support member; and 7) engaging the locking means of the screw assembly to secure the position of the support in relation to the base.
  • the method of use described above can include disposing the support adjacent to bone or adjacent to a spine. In one implementation, the method of use described above can include disposing the support with the subcutaneous fat layer of the back. In another implementation, the method of use described above can include disposing the support external to the body.
  • a method of use of the invention for effecting a desired vertebral disk spacing can include the steps of: 1) implanting a screw assembly comprising a support having a receiver, a base, an interconnection means, and a locking means into a vertebra; 2) deploying the support substantially perpendicular to the long axis of the base; 3) passing through the support and implanting one or more anchor assemblies having a base and a locking means into a vertebra; 4) interconnecting the anchor assembly with the receiver of the support, wherein the anchor assembly is unlocked within the receiver; 5) compressing or distracting the base of the screw assembly and the base of the anchor assembly in relation to each other (e.g.
  • instrumented defines a physical connection between a structure (e.g. a vertebra) and a medical device or instrument.
  • a method of use of the invention for effecting a desired curvature of the spine can include the steps of: implanting a screw assembly comprising a support having a receiver, a base, an interconnection means, and a locking means into a vertebra; 2) deploying the support substantially perpendicular to the long axis of the base; 3) passing through the support and implanting one or more anchor assemblies having a base and a locking means into a vertebra; 4) interconnecting the anchor assembly with the receiver of the support, wherein the anchor assembly is unlocked within the receiver; 5) compressing or distracting the bases in relation to each other (e.g. to affect the lordotic/kyphotic curvature of the spine); 6) locking the anchor assembly within the support (e.g. using a setscrew or cam); and 7) locking the support position in relation to the base using the screw assembly locking means (e.g. using a setscrew or cam).
  • a screw assembly 1101 including a base 1102 and one or more arms 1103 in a single unit.
  • the arm 1103 and base 1102 of the screw assembly 1101 are coupled by an interconnection means.
  • a screw assembly 1101 having one or more arms 1103 is attached to one or more support structures to form a support assembly 1301 (see FIGS. 13 A and 13B).
  • the support assembly 1301 can be used for temporary or permanent implantation.
  • the screw assembly 1101 interconnection means can facilitate free-rotational (or multiaxial) movement of an arm
  • the interconnection means can be selected from any number of means including but not limited to: a hinge means, a collet means, and a pin. As shown in FIGS. 11 A and 11B, the interconnection means comprises a receiver end 1112 disposed within a receiver 1202 of a base 1102. In this implementation, the arm 1103 can have a substantially spherical-shaped receiver end 1112 connected to a complementary-shaped receiver 1202 in the base head 104. Additionally, the base head
  • the free-rotational arm 1103 movement facilitated by the interconnection means is substantially a cone- shaped range of movement having an axis about which such movement is centered ("cone axis" hereinafter).
  • the implementation as shown in FIGS. 11 A and 1 IB can be used to provide support to a structure in a patient (e.g. a spine having a series of vertebrae).
  • a structure supported is a spine, and the spine includes a long axis ("spinal axis" hereinafter)
  • the screw assembly 1101 can provide support to the spine substantially collinearly with the spinal axis.
  • the cone axis of movement of the arm 1103 of the screw assembly 1101 can optionally be disposed so that the cone axis is substantially collinear with the spinal axis. This arrangement provides a degree of adjustability when positioning the arm 1103 and base 1102 of the screw assembly 1101 in relation to the structure being supported (e.g.
  • the three points of attachment to the three vertebrae can be substantially linear.
  • the three points of attachment are not necessarily substantially linear.
  • the interconnection means comprises one or more receiver end(s) 1112 of one or more arm(s) 103 disposed within a base head 1104 of a base 1102.
  • the interconnection means can facilitate movement between the arm 1103 and the base 1102, such that the arm 1103 is positionable in a first position that is parallel to a long axis of the base 1102 (shown in FIGS. 11D, 12B, and 12D) and positionable in a second position that is perpendicular to the long axis of the base 1102 (shown in FIG. 11C and HE).
  • the screw assembly 1101 interconnection means can facilitate free-rotational (or multiaxial) movement of an arm 1103 in relation to the base 1102.
  • the free-rotational movement of the arm 1103 can be substantially a cone-shaped range of movement having a cone axis.
  • the implementation as shown in FIGS. 11C and HE can be used to provide support to a structure in a patient (e.g. a spine having a series of vertebrae).
  • the present implementation can provide support to the spine substantially collinearly with the spinal axis.
  • FIGS. 11C and HE can be used to provide support to a structure in a patient (e.g. a spine having a series of vertebrae).
  • the present implementation can provide support to the spine substantially collinearly with the spinal axis.
  • an implementation wherein support is provided substantially collinearly with the spinal axis can include a cone axis of movement of the arm 1103 of the screw assembly 1101 disposed so that the cone axis is substantially perpendicular with the spinal axis.
  • This arrangement provides a similar degree of arm 1103 adjustability and advantages as discussed above for the implementation shown in FIGS. 11C and HE.
  • the screw assembly 1101 can be made of materials that are durable and that can be implanted in a body, including titanium, stainless steel, carbon fiber, etc.
  • the screw assembly 1101 is made of titanium.
  • the screw assembly 1101 is made of a biocompatible material, a reabsorbable material, or a combination of any of the foregoing materials.
  • the dimensions of the screw assembly 1101 vary with the application, hi general, in implementations as shown in FIGS. 1 IC and 1 IE, wherein the arm 1103 is positionable in a first position that is substantially parallel to the long axis of the base 1102, the length of the screw assembly 1101 is from substantially 20 to 1,000 millimeters. In one implementation, the length is substantially between 50 and 400 millimeters.
  • the screw assembly 1101 is sized for applications involving support of multiples levels of the posterior of the spine (see FIG. 14).
  • the length of the base 1102 is from substantially 20 to 100 millimeters and the length of the one or more arms 1103 is from substantially 20 to 600 millimeters, i another implementation the length of the base 1102 and the length of the arm 1103 are each from substantially between 20 and 600 millimeters.
  • the combined length of the base 1102 and the arm 1103 is sized for applications involving support of multiple levels of the posterior of the spine (see FIG. 14).
  • the screw assembly 1101 includes a longitudinal aperture 1106.
  • the longitudinal aperture 1106 traverses the length of the screw assembly 1101, and provides an aperture for the passage of instruments, tools, and guides (e.g. a K-wire) when the arm 1103 is positioned in a first position that is parallel to a long axis of the base 1102 (see FIG. ID, 2B, and 2D).
  • the base 1102 of the screw assembly 1101 is comprised of a base head 1104 and an anchor 1105.
  • the anchor 1105 can be a screw, staple, hook, or nail, and can be of a type typically used for bone anchoring.
  • the anchor 1105 is a screw of a type for insertion into a pedicle of a vertebra (see FIGS. 11A-11C, HE, 13A-13B and 14).
  • the interconnection means for coupling the base to the arms is comprised of the base head 1104.
  • the base head 1104 can include a receiver 1202 for receiving the receiver ends 112 of the screw assembly arms 1103.
  • the base head 1104 is configured for hinged attachment of one or more screw assembly arms 1103 using a hinge means (see, e.g., as in FIGS. 1A-1B)..
  • the base head 1104 can include a locking means. As shown in FIGS.
  • the locking means can be a setscrew 1107.
  • the base head 1104 can be designed to include an open-saddle (see FIGS. 11 A and 1 IB) or closed configuration (see FIGS. 1 IC - 1 IE) for accommodating the locking means (e.g. a setscrew 1107).
  • the locking means is a setscrew 1107, which secures the base 1102 and the one or more arms 1103 of the screw assembly 1101 together.
  • a screw assembly 1101 including a base 1102, one or more arms
  • a locking means can be pre-assembled for delivery to a structure.
  • the screw assembly 1101 can be delivered as separate pieces for assembly at the site of a structure.
  • FIGS. 1 ID and 12B-12D after one or more arms 1103 of a screw assembly 1101 are deployed from a first position that is substantially parallel to a long axis of the base to a second position that is substantially perpendicular to the long axis of the base 1102, the setscrew 1107 can be tightened to effect locking of the one or more arms 1103 in the second position, hi an alternative implementation, a cam (not shown) can be substituted for the setscrew 1107. [00137] In another implementation, as shown in FIG. 11 A, wherein a single arm
  • the setscrew 1107 can be tightened to effect locking of the arm 1103 into a position.
  • the arm 1103 can have a substantially spherical-shaped receiver end 1112 connected to a complementary-shaped receiver 1202 in the base head 1104.
  • the base head 1104 can be closed or open (e.g. open-saddle as shown in FIG. 11 A). Tightening the setscrew 1107 can create a load that compresses the receiver end 1112 of the arm 1103 against the receiver 1202 to effect locking of the arm 1103 into a position.
  • the receiver 1202 can be a substantially spherical collet-type receiver.
  • tightening the setscrew 1107 creates a load that compresses the receiver end 1201 of the arm 1103 against the receiver 1202, thereby deflecting one or more deformable fingers 1204 around the receiver end 1112 to effect locking of the arm 1103 into a position (see FIG. 12C).
  • a first arm 1103 can include a substantially spherical collet-type receiver end 1201 and the second arm can include a receiver end 1112 configured to interconnect within the receiver end 1201 (see FIG. 12C and 12D). As shown in FIG.
  • tightening the setscrew 1107 can create a load that compresses the receiver end 1201 of the first arm 1103 against the receiver end 1112 of the second arm 1103, thereby deflecting one or more deformable fingers 1204 of the receiver end 1201 around the receiver end 1112 of the second arm 1103 to effect simultaneous locking of both arms 1103 into a position.
  • the receiver end 1201 of the first arm 1103 and the receiver end 1112 of the second arm 1103 can also be configured to provide for step-wise locking of each arm 1103 into a position in relation to the base head 1104.
  • the receiver end 1201 of the first arm can be configured such that initial tightening creates a load that compresses the receiver end 1112 against the base head receiver 1202 to effect locking of the first arm 1103 into a position without affecting the free rotational movement of the second arm 1103.
  • the increased load created thereby can compresses the receiver end 1201 of the first arm 1103 against the receiver end 1112 of the second arm 1103, thereby deflecting one or more deformable fingers 1204 of the receiver end 1201 around the receiver end 1112 of the second arm 1103 to effect locking of the second arm 1103 into a position.
  • the setscrew 1107 can be tightened to effect locking of a single arm 1103 having a cylindrical shaped receiver end 1112, by creating a load that compresses the receiver end 1112 of the arm 1103 against the complementary-shaped receiver 1202.
  • the setscrew 1107 can be tightened to effect locking of two arms 1103, wherein the first arm 1103 includes a substantially cylindrical collet-type receiver end 1201 and the second arm 1103 (not shown) includes a receiver end 1112 configured to interconnect within the collet-type receiver end 1201.
  • tightening the setscrew 1107 creates a load that compresses the substantially cylindrical collet-type receiver end 1201 of the first arm 1103 against the receiver 1202 (see FIG. 12B), thereby deflecting one or more deformable fingers 1204 (not shown) around the receiver end 1112 of the second arm 1103 to effect locking of both arms 1103 into a position.
  • first arm 1103 includes a substantially spherical collet-type receiver end 1201 and the second arm 1103 includes a receiver end 1112 configured to interconnect within the collet-type receiver end 1201.
  • tightening the setscrew 1107 creates a load that compresses the substantially spherical collet-type receiver end 1201 of the first arm 1103 against the receiver 1202, thereby deflecting one or more deformable fingers 1204 around the receiver end 1112 of the second arm 1103 to effect locking of both arms 1103 into a position (see FIG. 12C).
  • the setscrew 1107 includes a setscrew aperture 1115.
  • the setscrew aperture 1115 can be configured to substantially align with the longitudinal aperture 1106 of the base 1102, thereby enabling through passage between the longitudinal aperture 1106 of the arm 1103 and base 1102 (as discussed above).
  • the one or more arms 1103 of the screw assembly 110 include a body lll l wherein the body l l ll has an elongate shape and includes a connector end 1108 for attachment to a support structure 1109, and a receiver end 1112.
  • the elongate shape of the body 1111 of the arm 1103 is a rod.
  • the elongate shape of the body lll l of the arm 1103 is substantially a longitudinally split rod.
  • the elongate shape of the body 1111 of the arm 1103 is a shape configured for fitted interrelation between two or more arms 1103 positioned in a first position that is substantially parallel to a long axis of the base 1102 (not shown).
  • the fitted interrelation can be comprised of a longitudinally split rod shape.
  • the elongate shape of the body l l l l of the arm 1103 includes an offset section 1113.
  • the offset section 1113 can be configured to provide a low-profile to the screw assembly 1101 when the one or more arms 1103 are positioned substantially parallel to a long axis of the base 1102 (See FIGS. 1 ID and 12B). Additionally, the offset section 1113 can provide a linear alignment of the base 1102 and the body 1111 of the arm 1103 when the arm 1103 is positioned substantially parallel to a long axis of the base 1102 (See FIGS. 1 ID and 12B).
  • the body 1111 of the arm 1103 includes a longitudinal aperture 1106.
  • the longitudinal aperture 1106 is a channel or groove running the length of the body ll l l of the arm 1103 (not shown).
  • two interrelating arms 1103 can have longitudinal apertures 106 that align to form a single longitudinal aperture 1106 when the arms 1103 are interrelated.
  • the longitudinal aperture 1106 of the body llll of the arm 1103 can be coaxially aligned with the longitudinal aperture 1106 of the base 1102 of the screw assembly 1101.
  • the longitudinal aperture 1106 traverses the length of the screw assembly 1101, and provides an aperture for the passage of instruments, tools, and guides (e.g. a K-wire)
  • the receiver ends 1112 of the one or more arms 1103 can include a hinge means for hinged interconnection with the base head 1104 e.g., as shown in FIGS. 11 A-
  • a locking means can be provided whereby after deployment, the one or more arms 1103 are lockable into a position substantially perpendicular to the long axis of the base 1102.
  • An example of such a locking means can be a one-way ratchet configuration (not shown).
  • the receiver end 1112 of a single arm 1103 can be cylindrical shape for interconnection within the receiver 1202 of the base head 1104.
  • the receiver 1202 can be an aperture in which the receiver end 1112 of the arm 1103 is received.
  • the receiver ends 1112 of two arms 1103 can be interconnecting and disposed within the base head 1104.
  • the receiver ends 1112 can interconnect by way of a collet-type design.
  • the two interconnecting receiver ends 1112 can have a cylindrical-shaped collet-type design including: a first collet-type receiver end 1201 having a substantially cylindrical recess, one or more relief cuts 1203 and one or more deformable fingers 1204, and; a second solid cylindrical-shaped receiver end 1112 configured for fitting into the cylindrical recess of the collet-type receiver end 1201 (not shown).
  • the two interconnecting receiver ends 1112 can have a spherical-shaped collet-type design including: a first collet-type receiver end 1201 having a substantially spherical recess, one or more relief cuts 1203 and one or more deformable fingers 1204, and; a second solid spherical-shaped receiver end 1112 configured for fitting into the first collet-type receiver end 1201.
  • the respective receiver ends 1112 can include a longitudinal aperture 1106 passing tlirough the interconnected receiver ends 1112.
  • a longitudinal aperture 1106 can be configured to provide coaxial alignment with the longitudinal aperture 1106 of the base 1102, when the arms 1103 are positioned substantially parallel to the long axis of the base 1102 (see FIGS. 12B and 12D).
  • each support structure 1109 is comprised of an anchor 1105, an aperture 1110, and a locking means (see FIGS. 13A and 13B).
  • the one or more support structures 1109 can be made of materials that are durable and that can be implanted in a body, including titanium, stainless steel, carbon fiber, etc.
  • the one or more support structures 1109 are made of titanium.
  • the one or more support structures 1109 are made of a biocompatible material, a reabsorbable material, or a combination of any of the foregoing materials.
  • each support structure 1109 is configured for attachment to a structure in a patient (e.g. bone).
  • the locking means for the one or more support structures 1109 can be a setscrew 1107.
  • the locking means can be a cam (not shown).
  • two support structures 1109 can be attached to a screw assembly 1101 to provide a support assembly 1301 that can be implanted into the pedicles 1403 of vertebra 1402 in a spine 1401 to effect support of the spine 1401.
  • a single support structure 1109 can be attached to a screw assembly 1101 to provide a support assembly 1301 that can be implanted into the pedicles 1403 of vertebra 1402 in a spine 1401 to effect support of the spine 1401.
  • a method of using the invention to support the spine 1401 includes the steps of: 1) delivering to bone a screw assembly 1101 having one or more arms 1103, a base 1102 and an interconnection means (e.g.
  • the one or more flanking support structures 1109 can be delivered, for example, to bone including one or more vertebral bodies on one or both sides of a vertebral body to which the screw assembly 1101 is delivered.
  • the one or more flanking support structures 1109 are delivered to vertebral bodies adjacent to the vertebral body to which the screw assembly 1101 is delivered. In another implementation, one or more of the flanking support structures 1109 are delivered to vertebral bodies distal to the adjacent-most vertebral body.
  • the method of supporting the spine can also be used in conjunction with a kyphoplasty procedure. Kyphoplasty is a percutaneous technique involving the use of an expandable structure, such as a balloon catheter, to create a cavity or void within the vertebral body, followed by filling the cavity with a bone substitute to form an "internal cast".
  • the bone substitute could be any appropriate filling materials used in orthopedic surgery, including but not limited to, allograft or autograft tissue, hydroxyapatite, epoxy, PMMA bone cement or synthetic bone substitutes, medical grade plaster of Paris or calcium phosphate or calcium sulfate cements. Methods and instruments suitable for such treatment are more fully described in U.S. Pat. Nos. 4,969,888 and 5,108,404.
  • Kyphoplasty can be used to reduce vertebral compression fractures and to move bone with precision, thus restoring as close to normal the pre- fracture anatomy of the vertebral body.
  • Nertebral compression fractures caused by trauma have traditionally been treated with open reduction, internal fixation stabilization hardware and fusion techniques using a posterior approach.
  • the stabilization hardware is used to offload the fractured vertebral body and to stop motion across the disk so that bone graft can fuse one vertebral body to the next and the stabilization hardware usually becomes a permanent implant.
  • the stabilization hardware may be designed to facilitate easy removal after fusion has occurred.
  • Stabilization hardware can take many forms, including those described herein.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Neurology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (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)

Abstract

L'invention concerne un dispositif médical ainsi que des procédés d'utilisation associés qui sont destinés à soutenir une structure (par ex. un os). Un ensemble vis (1, 101, 1101) peut comprendre une base (3, 102, 1102), une ou plusieurs branches, ainsi que des moyens d'interconnexion (4, 105) pour coupler la base aux branches. Les moyens d'interconnexion peuvent permettre de placer les branches dans une première position qui est parallèle à un axe longitudinal de la base, ainsi que dans une seconde position qui est perpendiculaire à l'axe longitudinal de la base. La base peut être configurée pour être fixée à une structure, les branches étant configurées pour être attachées aux structures de support. Une structure de support (10), pouvant comprendre une ouverture (11) dans laquelle s'ajustent des moyens de verrouillage (9, 1107), peut être configurée en forme de selle à extrémité libre et fixée à un dispositif médical (par ex. un ensemble vis) après sa pose dans le corps du patient.
EP05735206A 2004-04-16 2005-04-15 Ensemble vis Withdrawn EP1740112A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/825,962 US7648520B2 (en) 2004-04-16 2004-04-16 Pedicle screw assembly
US11/027,501 US7811311B2 (en) 2004-12-30 2004-12-30 Screw with deployable interlaced dual rods
US11/027,500 US7789899B2 (en) 2004-12-30 2004-12-30 Bone anchorage screw with built-in hinged plate
PCT/US2005/012657 WO2005104970A1 (fr) 2004-04-16 2005-04-15 Ensemble vis

Publications (1)

Publication Number Publication Date
EP1740112A1 true EP1740112A1 (fr) 2007-01-10

Family

ID=34965628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05735206A Withdrawn EP1740112A1 (fr) 2004-04-16 2005-04-15 Ensemble vis

Country Status (5)

Country Link
EP (1) EP1740112A1 (fr)
JP (1) JP2007532258A (fr)
AU (1) AU2005237459A1 (fr)
CA (1) CA2562744A1 (fr)
WO (1) WO2005104970A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967826B2 (en) 2003-10-21 2011-06-28 Theken Spine, Llc Connector transfer tool for internal structure stabilization systems
US7588575B2 (en) 2003-10-21 2009-09-15 Innovative Spinal Technologies Extension for use with stabilization systems for internal structures
US8075591B2 (en) * 2004-11-09 2011-12-13 Depuy Spine, Inc. Minimally invasive spinal fixation guide systems and methods
KR101387163B1 (ko) 2006-04-11 2014-04-29 신세스 게엠바하 최소 침습적 고정 시스템
WO2007138659A1 (fr) 2006-05-26 2007-12-06 National University Corporation Nagoya University Dispositif de fixation externe
US7806913B2 (en) 2006-08-16 2010-10-05 Depuy Spine, Inc. Modular multi-level spine stabilization system and method
NL1033910C1 (nl) * 2007-05-31 2008-12-02 Baat Holding B V Medisch apparaat voor het ten opzichte van elkaar positioneren van botdelen, in het bijzonder ruggenwervels alsmede een gereedschap voor het onderdeel voor onderdeel aanbrengen van een dergelijk medisch apparaat.
EP2200525A4 (fr) * 2007-08-24 2012-12-05 Spinal Elements Inc Dispositif de stabilisation spinale à tige à boucle
GB0822507D0 (en) 2008-12-10 2009-01-14 Karnezis Ioannis Surgical device for correction of spinal deformities
JP5658237B2 (ja) 2009-05-20 2015-01-21 ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング 患者装着式開創器
US9827013B2 (en) 2009-12-08 2017-11-28 Concept Spine Ltd. Surgical device for correction of spinal deformities
US8535318B2 (en) 2010-04-23 2013-09-17 DePuy Synthes Products, LLC Minimally invasive instrument set, devices and related methods
WO2012166495A1 (fr) 2011-05-27 2012-12-06 Synthes Usa, Llc Système de fixation vertébrale minimalement invasif comprenant des caractéristiques d'alignement vertébral
KR102653961B1 (ko) * 2021-12-30 2024-04-01 가톨릭대학교 산학협력단 척추 고정 장치

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9402695U1 (de) * 1994-02-18 1994-04-14 Kernforschungszentrum Karlsruhe Gmbh, 76133 Karlsruhe Implantat
US5545166A (en) * 1994-07-14 1996-08-13 Advanced Spine Fixation Systems, Incorporated Spinal segmental reduction derotational fixation system
JP2871620B2 (ja) * 1996-09-06 1999-03-17 株式会社ロバート・リード商会 骨固定装置
US6309391B1 (en) * 2000-03-15 2001-10-30 Sdgi Holding, Inc. Multidirectional pivoting bone screw and fixation system
US7322979B2 (en) * 2000-03-15 2008-01-29 Warsaw Orthopedic, Inc. Multidirectional pivoting bone screw and fixation system
US6802844B2 (en) * 2001-03-26 2004-10-12 Nuvasive, Inc Spinal alignment apparatus and methods
US6520963B1 (en) * 2001-08-13 2003-02-18 Mckinley Lawrence M. Vertebral alignment and fixation assembly
US20040210216A1 (en) * 2003-04-17 2004-10-21 Farris Robert A Spinal fixation system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005104970A1 *

Also Published As

Publication number Publication date
CA2562744A1 (fr) 2005-11-10
WO2005104970A1 (fr) 2005-11-10
AU2005237459A1 (en) 2005-11-10
JP2007532258A (ja) 2007-11-15

Similar Documents

Publication Publication Date Title
US7811311B2 (en) Screw with deployable interlaced dual rods
US7789899B2 (en) Bone anchorage screw with built-in hinged plate
EP1740112A1 (fr) Ensemble vis
US7648520B2 (en) Pedicle screw assembly
US7618418B2 (en) Plate system for minimally invasive support of the spine
US7524323B2 (en) Subcutaneous support
EP0611116B1 (fr) Appareil de maintien rachidien
EP2726002B1 (fr) Système de fixation aver une vis à os et
AU678196B2 (en) Internal fixators
US20050228380A1 (en) Instruments and methods for minimally invasive spine surgery
US20030187509A1 (en) Modulus plating system and method
WO2010122472A1 (fr) Implant spinal
WO1995013754A1 (fr) Liaison transversale pour systeme d'implant vertebral
US10687861B2 (en) Systems and methods for spinal compression, distraction, and fixation
KR20070022042A (ko) 스크류 조립체

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20061106

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARKWORTH, AARON D.

Inventor name: MALANDAIN, HUGUES F.

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KYPHON SARL

17Q First examination report despatched

Effective date: 20100309

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100720