WO2012127267A1 - Système d'ancrage pédiculaire - Google Patents

Système d'ancrage pédiculaire Download PDF

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Publication number
WO2012127267A1
WO2012127267A1 PCT/IB2011/001124 IB2011001124W WO2012127267A1 WO 2012127267 A1 WO2012127267 A1 WO 2012127267A1 IB 2011001124 W IB2011001124 W IB 2011001124W WO 2012127267 A1 WO2012127267 A1 WO 2012127267A1
Authority
WO
WIPO (PCT)
Prior art keywords
stopper
socket
screwable
anchoring system
fitting tool
Prior art date
Application number
PCT/IB2011/001124
Other languages
English (en)
Inventor
Emmanuel Zylber
Rodolphe Lourdel
Pierre Capron
Jérôme DEFRANCE
Original Assignee
Scient'x
Surgiview
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scient'x, Surgiview filed Critical Scient'x
Priority to PCT/IB2011/001124 priority Critical patent/WO2012127267A1/fr
Publication of WO2012127267A1 publication Critical patent/WO2012127267A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7091—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for applying, tightening or removing longitudinal element-to-bone anchor locking elements, e.g. caps, set screws, nuts or wedges
    • 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

Definitions

  • the present invention relates to the field of medical devices and more particularly to a vertebral anchoring system for the surgical treatment of spinal pathologies.
  • correction vertebral anchorage devices like pedicular bone screws or hooks are often used to fixedly secure correction devices such as distraction rods into vertebrae along the spinal column.
  • Pedicular screws typically have a threaded shank configured for implantation into a pedicle or vertebral body of a vertebra. They further comprise a socket designed to extend beyond the vertebra, said socket generally defining a channel or a U-shaped recess in the head's body to receive a rod or other implant.
  • the socket may further be open or closed at its top depending on the design chosen for accommodating a rod or other implant. If the socket is open, a closure member such as a locking screw must be used to close between opposite sides of the socket once a rod or other implant is placed therein. If the socket is closed, a rod or the like implant is threaded or embushed through the socket of the bone screw.
  • the bone screws with an open socket allow pre-locking of rods by use of the locking screws, which can be tightened onto a rod positioned in the U- shaped recesses of the socket to prevent it from slipping out of the recesses while the surgeon is bending it.
  • the present invention aims at providing a reliable solution for pre-locking locking screws in the socket of vertebral anchoring devices such as pedicular bone screws or pedicular hooks for example.
  • the present invention further aims at allowing automatic setting of a locking screw in the socket of a pedicular bone screw to secure the socket onto a rod and preventing the locking screw from disassembling from the bone screw head.
  • the solution provided by the invention consists in an anchoring system comprising:
  • socket for receiving and fastening a corrective device, said socket comprising a longitudinal bore extending about a longitudinal axis and a receiving channel for a said corrective device, and
  • a screwable stopper to be screwed in the longitudinal bore of the socket by means of a fitting tool to bias said corrective device into said receiving channel of the socket and lock said corrective device in position within the receiving channel.
  • the screwable stopper advantageously comprises at least one resilient member preventing disassembling of said stopper from the longitudinal bore of the socket once the stopper has been inserted therein.
  • the corrective device used in connection with the anchoring system of the invention can be a distraction rod or a corrective implant or another surgical device that needs to be secured to the spine for treatment or corrective purpose.
  • the vertebral anchoring device can also be any kind of pedicular anchorage, a vertebral screw or a hook for instance.
  • the screwable stopper comprises advantageously a cylindrical body comprising a buttress external thread being complementary with a corresponding buttress internal thread on the internal surface of a wall of the socket.
  • the screwable stopper comprises an annular collar accommodating said resilient member.
  • said collar extends beyond said external thread at a bottom of the bodv of the screwable stopper.
  • said collar comprises a lip forming a shoulder extending radially to its annular surface and about which said resilient member is clipped.
  • the diameter of said collar is lower than the diameter of external thread of said screwable stopper.
  • said resilient member can be chosen as a bushing ring. It is also preferable that the resilient member is made of polymer.
  • the apparatus of the present invention further comprises a fitting tool to fit the screwable stopper into said socket by means of screwing wherein said fitting tool comprises an engaging part configured to engage said screwable stopper such that the fitting tool is automatically released from the screwable stopper once it has been screwed in a said socket for a determined lengthin a pre-locking position.
  • the screwable stopper comprises a longitudinal through hole having an internal shape adapted to mate the shape of the engaging part of a fitting tool.
  • the engaging part of the fitting tool comprises a tapered coupling section and a cylindrical tip protruding from the through hole of the screwable stopper to abut against a corrective device lodged into the receiving channel of the socket before the screwable stopper when said stopper is screwed with the fitting tool in the socket and manage a clearance between said stopper and said corrective device and forcing disengagement of the fitting tool from the screwable stopper.
  • the tapered shape of the engaging part of the fitting tool is such that the contact between said engaging part and said through hole of the screwable stopper is linear.
  • FIG. 1 is a front view of the an anchoring system according to the invention comprising a pedicular screw, a screwable stopper fitted in a socket of said screw and a fitting tool for adjusting and screwing the stopper inside said socket;
  • FIGS. 2A and 2B are perspective views of the pedicular screw of the anchoring system shown in fig.l except for the fitting tool that has been removed;
  • FIG. 3 is a perspective view of a fitting tool for pre-locking the screwable stopper of the anchoring system of the invention
  • FIG. 4 is an exploded perspective view of a screwable stopper for the anchoring system of the invention.
  • FIGS. 5 and 6 are front section views of the socket of the pedicular screw of the anchoring system of the invention showing the adjustment process of the screwable stopper with the fitting tool in the socket where a distraction rod has been inserted;
  • FIGS. 7 and 8 represent section views of the anchoring system of the invention showing respectively the linear contact between the fitting tool and the screwable stopper during screwing of said stopper and disengagement of said linear contact when the screwable stopper has been set in a pre-locking position
  • FIG. 9 and 10 represent variant embodiments of the anchoring device of the invention in the form of a vertebral hook and a fixed pedicular screw respectively.
  • the present invention proposes an anchoring system 1 illustrated in Figs.l to 10, which cancels the need of effective locking of the stopper to proceed to in-situ bending of rods once the pedicular bone screws have been implanted into the spine at their required position.
  • the reference number 1 generally represents an anchoring system according to the present invention in a preferred embodiment.
  • Figures 9 and 10 represent variant forms of an anchoring device according to the present invention presenting common technical features with the following description.
  • the anchoring system 1 comprises a vertebral anchoring device in the form of a pedicular bone screw 2, a gripping assembly 3 comprising a socket 4 and a screwable stopper 5 to be fit in the socket 4 for adjusting the pedicular bone screw 2 onto a corrective device or surgical implant such as a distraction rod 7 and a fitting tool 6 adapted for fitting said screwable stopper 5 into said socket 4 of the gripping assembly 3.
  • a corrective device or surgical implant such as a distraction rod 7 and a fitting tool 6 adapted for fitting said screwable stopper 5 into said socket 4 of the gripping assembly 3.
  • the pedicular bone screw 2 comprises a shank 21 integral with an upwardly extending upper end 22 generally having a substantially spherical form.
  • the shank 21 is elongate about a longitudinal axis X-X', with a helically wound bone engaging thread 23 extending substantially from the upper end 22 to near a lower spike tip 24 and projecting radially outward therefrom.
  • the helically wound thread 23 thereby allow for gripping and advancement of the pedicular bone screw 2 in the bone of a vertebra to allow a surgeon secure an implant or rod 7 to the spine of a patient for correcting a deformation or pathology in the spine such as scoliosis.
  • the gripping assembly 3 extends at the upper end 22 of the shank 21 about said axis X-X'. It comprises a socket 4 and a screwable stopper 5.
  • the gripping assembly 3 is integral with the shank 21 to provide a monoaxial extending device for fixing an implant or rod 6 to correct a default in the spine.
  • the socket 4 of the gripping assembly 3 has a substantially cylindrical shape with a peripheral cylindrical wall 41 extending about the axis X-X' and delimiting a central longitudinal bore 42 into which said screwable stopper 5 can be accommodated.
  • the inner surface of the peripheral wall 41 includes a helically wound track or thread 8 extending from the top rim 43 of the longitudinal bore 42 downwardly therefrom.
  • the track or thread 8 is configured to mate with a corresponding external thread 9 located on the external surface of the screwable stopper 5 when said stopper 5 is introduced and rotated by means of the fitting tool 6 into the longitudinal bore 42 at the top rim 43.
  • the corresponding shapes of the track or thread 8 in the socket 4 and the external thread 9 of the screwable stopper 5 can be configured with any type of structure conventionally known such as V-shaped thread, a buttress thread, a reverse angle thread or other thread-like or non-thread-like helically wound mating shapes for operably guiding under rotation and advancing the screwable stopper 5 in the socket 4 of the gripping assembly 3 when the stopper 5 is torqued in the longitudinal bore 42 of the socket 4 with the fitting tool 6.
  • the closure screwable stopper 5 is aimed for biasing a correction member such as a rod 7 for correction of spinal deformities against the bottom of a U-shaped channel 44 defined by two U-shaped recesses 45 casted or machined in opposite symmetrical positions in the wall 41 of the socket 4 of the gripping structure 3.
  • the two U-shaped recesses 45 extend symmetrically about the longitudinal axis X-X' of the socket and bone screw 2 from the top rim 43 of the socket 4 to beneath the middle of the socket 4, and preferably approximately at a third of the socket's length taken from the top end 22 of the shank 21 of the bone screw 2.
  • the two U-shaped recesses 45 define the U-shaped channel 44 throughout the socket 4, which is designed to receive a correction rod 7 seated at the bottom of the U-shaped recesses 45 so that said rod 7 can only be translated transversely to the axis X-X' of the shank 21 and socket 4 of the bone screw 2 in the channel 44 defined by the recesses 45.
  • the rod 7 that is utilized with the anchoring system 1 can be any of a variety of implants utilized in reconstructive spinal surgery, but is normally a cylindrical elongate structure having a cylindrical surface of uniform diameter and preferably having a generally smooth surface.
  • the rod 7 is also preferably sized and shaped to snugly seat near or at the bottom of the U-shaped channel 44 of the socket 4.
  • the screwable stopper 5 has a generally cylindrical body 51, with a helically wound external thread 9 configured to mate the internal track or thread 8 on the inner surface the socket's wall 41 for rotating advancement of the stopper 5 into the socket 4 when said stopper 5 is rotated clockwise in the longitudinal bore 42 of the socket 4 from the top rim 43 and, in particular, to cover the top or upwardly open portion of the U-shaped channel 44 to capture the rod 7 within the socket 4 of the pedicular bone screw 2.
  • the screwable stopper 5 further includes at a base or bottom 52 an annular collar 53 of smaller diameter than the body 51.
  • the annular collar 53 is provided with a lip 54 at its bottom.
  • the lip 54 aims at frictionally engaging the rod 7 when the screwable stopper 5 is screwed with the fitting tool 6 in the longitudinal bore 42 of the socket.
  • the screwable stopper can be any of a variety of different types of closure structures for use in conjunction with the present invention with suitable mating structure with the inner surface of the wall 41 of the socket 4.
  • the body 51 of the stopper 5 comprises a longitudinal through hole 55 extending along a longitudinal axis Z-Z' of the stopper 5.
  • the through hole 55 aims at receiving the fitting tool 6 for screwing the stopper 5 within the longitudinal bore 42 of the socket.
  • the geometry of a transverse section of the through hole 55 can be of any type usually encountered in the field of pedicular bone screws such as a triangular, square, pentagonal, hexagonal or octagonal section.
  • screwable stopper 5 further comprises a resilient annular member 56 clipped onto said annular collar 53 over the lip 54.
  • That annular resilient member 56 can be of rubber or in any biocompatible resilient material such as PEEK (Polyether ether ketone), PCU (Polycarbonate Urethane), UHMPWE (Ultra- high-molecular-weight polyethylene) or the like.
  • PEEK Polyether ether ketone
  • PCU Polycarbonate Urethane
  • UHMPWE Ultra- high-molecular-weight polyethylene
  • the resilient member 56 advantageously prevents the screwable stopper 5 once inserted and screwed in the longitudinal bore 42 of the socket 4 to disassemble from said bore and stopper 5 under vibrating or mechanical stress to the wall 41 of the socket 4.
  • This contributes to an advantageous effect of the anchoring system 1 of the invention, which is to allow a setting of the stopper 5 in the socket 4 in a pre- locking position wherein there is a thin gap or clearance S of a few tenths of millimeters between the lip 54 of the stopper and the rod 7 in the U-shaped channel for the surgeon to be able to bend in-situ the rod before locking the screwable stopper 5 onto said rod during a surgical procedure.
  • the anchoring system 1 of the present invention further comprises a fitting tool 6 for screwing and setting in position the screwable stopper 5 within the longitudinal bore 42 of the socket 4 of the bone screw 2.
  • the fitting tool 6 is very like a screwdriver and basically comprises an elongate cylindrical shank 61 at a first end 62 of which a handle part 63 is formed and at a second end 64 of which an engaging part 65 is formed opposite to the handle part 63.
  • the handle part 63, the elongate shank 61 and the engaging part 65 of the fitting tool 6 all extend coaxially along a longitudinal axis Y-Y'.
  • the handle part 63 is substantially cylindrical and has larger diameter than the elongate shank 61, which in turn also has a larger diameter than the engaging part 65.
  • the handle part 63 further preferably comprises a corrugated or rough external surface 66 to provide an easy and firm grip by hand and a good transmission of torqueing efforts from a hand to the fitting tool 6.
  • the engaging part 65 of the fitting tool 6 comprises a coupling section 651 extending from the elongate shank 61 and terminated by a cylindrical tip 652 joined to the coupling section 651 by a fillet 653.
  • the coupling section 651 of the engaging part 65 has a non- revolutional tapered shape, and more preferably a shape corresponding to the shape of a transverse section of the through hole 55 of the screwable stopper, a pentagonal or hexagonal tapered shape for instance.
  • Such a shape is preferably chosen to help efficient torque transmission from the fitting tool 6 to the closure screwable stopper 5 as shown in fig. 1 and fig. 5.
  • the tapered shape of the coupling section 651 and the dimensions (width, depth) of the through hole 55 of the stopper 5 are chosen such that the contact between said coupling section and said through hole 55 is linear and not planar, i.e. the peripheral contact on the coupling section 651 is linear when said coupling section is inserted in the through hole 55.
  • the cylindrical tip 652 of the engaging part 651 of the fitting tool 6 is thinner than the coupling section 651, i.e. the tip 652 has as smaller diameter than the smallest dimension of the coupling section 651 taken in a plane perpendicular to the longitudinal axis Y-Y' of the fitting tool 6.
  • the end of the cylindrical tip 652 can be flat but it can also be round or adopt any other form.
  • the coupling section 651 of the fitting tool is further designed such that the tip 652 goes beyond the lip 54 of the annular collar 53 when the fitting tool 6 is inserted in the through hole 55 of the screwable stopper 5. Thanks to this particular design and as illustrated in Fig. 5 the tip 652 protrudes in front of the lip 54 of the screwable stopper 5 and therefore comes in abutment against a rod 7 seated in the U-shaped channel 44 of the socket before the lip itself touches said rod.
  • the engaging part 65 of the fitting tool 6 is configured to engage the through hole 55 in the screwable stopper 5 such that the fitting tool 6 is automatically released from the screwable stopper 5 once it has been screwed in the socket 4 for a determined length.
  • the tip 652 and conic shape of the coupling section 651 of the fitting tool 6 form a reference for the maximum screwing length of the screwable stopper 5 along axis X-X' in the socket 4 to prevent the stopper from touching the rod 7.
  • the gap S is determined such that:
  • D is the depth of the U-shaped channel 44
  • H is the height of the screwable stopper 5
  • d is the diameter of the rod 7.
  • the gap S allows a manual displacement and bending of the rod 7 in the head of the pedicular bone screw 2 by the surgeon before locking it firmly in place with the screwable stopper 5.
  • the screwable stopper 5 cannot disassemble from said socket thanks to the resilient annular member embedded around the annular collar 54 of the stopper 5, which holds the stopper 5 in place by friction against the internal thread 8 of the socket 4.
  • the anchoring system 1 of the present invention provides a secure and reliable system for surgeons to implement the in-situ bending technique of correction rods in spine surgery and circumvents the incompatibility between the classical locking systems using pedicular bone screws and the in-situ bending technique.
  • anchoring system of the present invention is not limited to the in-situ bending technique and can also be used in any other correcting technique implementing rods in spine surgery.

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  • 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

La présente invention porte sur un système d'ancrage comprenant : - un dispositif d'ancrage vertébral destiné à être fixé sur au moins une vertèbre, et - un embout (4) destiné à recevoir et à fixer un dispositif correcteur (7), ledit embout (4) comprenant un alésage longitudinal s'étendant autour d'un axe longitudinal et un canal de réception (44) pour ledit dispositif correcteur, et - un bouchon vissable (5) à visser dans l'alésage longitudinal de l'embout (4) au moyen d'un outil d'ajustement (6) pour solliciter ledit dispositif correcteur (7) dans ledit canal de réception (44) de l'embout et verrouiller ledit dispositif correcteur en position à l'intérieur du canal de réception. Selon l'invention, le bouchon vissable (5) comprend au moins un élément souple (56) empêchant le démontage dudit bouchon (5) de l'alésage longitudinal de l'embout (4) une fois que le bouchon a été introduit dans celui-ci.
PCT/IB2011/001124 2011-03-18 2011-03-18 Système d'ancrage pédiculaire WO2012127267A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2011/001124 WO2012127267A1 (fr) 2011-03-18 2011-03-18 Système d'ancrage pédiculaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2011/001124 WO2012127267A1 (fr) 2011-03-18 2011-03-18 Système d'ancrage pédiculaire

Publications (1)

Publication Number Publication Date
WO2012127267A1 true WO2012127267A1 (fr) 2012-09-27

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WO (1) WO2012127267A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9192415B1 (en) 2008-02-06 2015-11-24 Nuvasive, Inc. Systems and methods for holding and implanting bone anchors
US9198698B1 (en) 2011-02-10 2015-12-01 Nuvasive, Inc. Minimally invasive spinal fixation system and related methods
US9486256B1 (en) 2013-03-15 2016-11-08 Nuvasive, Inc. Rod reduction assemblies and related methods
US9974577B1 (en) 2015-05-21 2018-05-22 Nuvasive, Inc. Methods and instruments for performing leveraged reduction during single position spine surgery
US10398481B2 (en) 2016-10-03 2019-09-03 Nuvasive, Inc. Spinal fixation system
US11051861B2 (en) 2018-06-13 2021-07-06 Nuvasive, Inc. Rod reduction assemblies and related methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070118123A1 (en) * 2005-11-21 2007-05-24 Strausbaugh William L Polyaxial bone anchors with increased angulation
DE202007012643U1 (de) * 2007-08-30 2007-11-08 Aesculap Ag & Co. Kg Orthopädisches Haltesystem
EP1994902A2 (fr) * 2007-05-24 2008-11-26 Aesculap AG Système de fixation de vis pédiculaire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070118123A1 (en) * 2005-11-21 2007-05-24 Strausbaugh William L Polyaxial bone anchors with increased angulation
EP1994902A2 (fr) * 2007-05-24 2008-11-26 Aesculap AG Système de fixation de vis pédiculaire
DE202007012643U1 (de) * 2007-08-30 2007-11-08 Aesculap Ag & Co. Kg Orthopädisches Haltesystem

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10426526B2 (en) 2008-02-06 2019-10-01 Nuvasive, Inc. Systems and methods for introducing a bone anchor
US9192415B1 (en) 2008-02-06 2015-11-24 Nuvasive, Inc. Systems and methods for holding and implanting bone anchors
US11311320B2 (en) 2008-02-06 2022-04-26 Nuvasive, Inc. Systems and methods for introducing a bone anchor
US9492208B1 (en) 2008-02-06 2016-11-15 Nuvasive, Inc. Systems and methods for holding and implanting bone anchors
US10004544B2 (en) 2008-02-06 2018-06-26 Nuvasive, Inc. Systems and methods for introducing a bone anchor
US9757166B1 (en) 2008-02-06 2017-09-12 Nuvasive, Inc. Systems and methods for holding and implanting bone anchors
US9649140B1 (en) 2011-02-10 2017-05-16 Nuvasive, Inc. Minimally invasive spinal fixation system and related methods
US9198698B1 (en) 2011-02-10 2015-12-01 Nuvasive, Inc. Minimally invasive spinal fixation system and related methods
US11406429B2 (en) 2011-02-10 2022-08-09 Nuvasive, Inc. Minimally invasive spinal fixation system and related methods
US10426527B2 (en) 2011-02-10 2019-10-01 Nuvasive, Inc. Minimally invasive spinal fixation system and related methods
US11723698B2 (en) 2011-02-10 2023-08-15 Nuvasive, Inc. Minimally invasive spinal fixation system and related methods
US9486256B1 (en) 2013-03-15 2016-11-08 Nuvasive, Inc. Rod reduction assemblies and related methods
US9974577B1 (en) 2015-05-21 2018-05-22 Nuvasive, Inc. Methods and instruments for performing leveraged reduction during single position spine surgery
US10682166B2 (en) 2015-05-21 2020-06-16 Nuvasive, Inc. Methods and instruments for performing leveraged reduction during single position spine surgery
US11771477B2 (en) 2015-05-21 2023-10-03 Nuvasive, Inc. Methods and instruments for performing leveraged reduction during single position spine surgery
US10398481B2 (en) 2016-10-03 2019-09-03 Nuvasive, Inc. Spinal fixation system
US11197697B2 (en) 2016-10-03 2021-12-14 Nuvasive, Inc. Spinal fixation system
US11766281B2 (en) 2016-10-03 2023-09-26 Nuvasive, Inc. Spinal fixation system
US11051861B2 (en) 2018-06-13 2021-07-06 Nuvasive, Inc. Rod reduction assemblies and related methods

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