EP1901669A2 - Appareil d'implant rachidien - Google Patents

Appareil d'implant rachidien

Info

Publication number
EP1901669A2
EP1901669A2 EP06770977A EP06770977A EP1901669A2 EP 1901669 A2 EP1901669 A2 EP 1901669A2 EP 06770977 A EP06770977 A EP 06770977A EP 06770977 A EP06770977 A EP 06770977A EP 1901669 A2 EP1901669 A2 EP 1901669A2
Authority
EP
European Patent Office
Prior art keywords
shaft
plate
plate portion
dome
connector
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Withdrawn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
EP06770977A
Other languages
German (de)
English (en)
Inventor
Jose Gournay
Philippe Lemaitre
Ezzine Banouskou
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.)
Warsaw Orthopedic Inc
Original Assignee
Warsaw Orthopedic Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/137,206 external-priority patent/US7850719B2/en
Application filed by Warsaw Orthopedic Inc filed Critical Warsaw Orthopedic Inc
Publication of EP1901669A2 publication Critical patent/EP1901669A2/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Withdrawn legal-status Critical Current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
    • A61B17/7041—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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • 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
    • A61B17/7044—Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
    • 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
    • A61B17/7055—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant connected to sacrum, pelvis or skull
    • 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

  • Apparatus and systems for correcting deformations of the spine often comprise one or more rods extending along a portion of the spine.
  • rod(s) are usually fixed to the sacrum of the patient by way of a plate which, for instance, may straddle vertebrae Sl and S2 and bear a protrusion on which apparatus such as a slotted connector is fitted and immobilized.
  • a slotted connector may be itself traversed by a rod and immobilize the latter by a wedging action.
  • An example of such a plate is described in document WO- A-02/38061, for example.
  • the plate which is fixed not on two vertebrae such as Sl and S2, but on one vertebra (for example Sl) and on iliac bone of the patient.
  • the plate may include, at one of its ends, a lateral extension provided with an orifice for the passage of a bone anchoring screw.
  • This lateral extension is oriented in the direction of an iliac bone and is thus situated outside the plane of the plate, with which it normally forms an angle of the order of 50 degrees.
  • the iliac bone can be connected to the rod.
  • Different sizes of these sacral plates with iliac extension are available and are used in accordance with the morphology of the patient. However, the adaptation of the plate to the exact morphology of the patient is often only approximate.
  • FIG. 1 shows a perspective view of an embodiment of an implant.
  • FIG. 3 shows a perspective view of a portion of the embodiment of FIG. 1.
  • FIG. 6 shows a perspective view of a portion of the embodiment of FIG. 1 with embodiments of additional structure.
  • FIG. 7 shows a perspective view partially in section of the embodiments in FIG. 6.
  • FIG. 8 shows a perspective view of a series of additional embodiments of part of the implant of FIG. 1.
  • FIG. 12 shows a side view partially in section of a portion of the embodiment of FIG. 10.
  • FIG. 13 shows a perspective view of a portion of the embodiment of FIG. 10 with embodiments of additional structure.
  • FIG. 14 shows a perspective view partially in section of the embodiments in FIG. 13.
  • FIGS. 1 to 7 an embodiment of an implant is shown.
  • the implant has two parts.
  • Plate 1 that may be fixed on the sacrum of a patient, for example on vertebra Sl.
  • plate 1 is oblong or elongated, and is fixed by means of a bone anchor 2, which may be a bone screw.
  • Plate 1 includes an aperture 3, and in a particular embodiment includes a hole 4 that at least slightly overlaps aperture 3 and may be threaded.
  • Anchor 2 passes through aperture 3 in plate 1 and into contact with bone.
  • a plug or screw (not shown) can be screwed in so as to immobilize the head of screw 2 and prevent it from migrating from its seat after placement.
  • An upper surface 40 and a lower surface 24 of plate 1 may be substantially flat.
  • the illustrated embodiment of plate 1 also has a protrusion or shaft 5 and a dome 8.
  • Shaft 5 has a longitudinal axis and is threaded in a particular embodiment, and a connector 6 can be fitted around at least a portion of shaft 5, as will be further described below.
  • the lower part of protrusion 5 includes a spherical surface
  • slot 20 is delimited by an upper surface 21 of V shape whose point 22 is situated substantially on the axis of symmetry 23 of protrusion 5.
  • An upper part of shaft 5 includes a notch or line of lesser resistance 30 to enable shaft 5 to be relatively easily cut or broken, and a head portion 44.
  • Head portion 44 may be configured hexagonally, as in the illustrated embodiment, or may include lobes, slots, internal prints or other configurations to permit gripping, holding, turning, and/or other manipulations.
  • Dome 8 in the illustrated embodiment, extends above upper surface 40 of plate 1 and has an outer surface 46 that is curved, and in a particular embodiment may form part of a sphere, and an inner surface 26 that is substantially conical in a particular embodiment. Dome 8 at least partially surrounds an orifice 25 that extends through plate 1, e.g. from a top edge of dome 8 through to lower surface 24 of plate 1.
  • One or more holes 48 may be placed through dome 8, which holes 48 may extend from inner surface 26 all the way through dome 8 to outer surface 46.
  • Protrusion 5 can be fixed, for example substantially perpendicular to the upper surface of plate 1 or, as in the example shown, it can be pivotable and/or of the type referred to as "multi-axial," that is to say capable of being oriented inside a cone whose angle may be of the order of 30 degrees.
  • the means ensuring this multi-axial orientation can be of various types, and the illustrated example will be described in more detail below.
  • the illustrated embodiment of plate 1 also includes a longitudinal rod 10 extending therefrom, and which may be directed toward the lower part of the sacrum.
  • Rod 10 may be substantially cylindrical and may be of any desired length or diameter compatible with spinal fixation.
  • the embodiment shown depicts rod 10 to have a length comparable to or somewhat less than the length of plate 1, and a diameter comparable to or slightly larger than the distance between surfaces 40 and 24 of plate 1.
  • protrusion 5 is engaged through the lower face 24 of plate 1 and is passed through an orifice 25 arranged at the summit of dome 8. Surface 19 of protrusion 5 thus comes into contact with inner surface 26 of dome 8. Pin
  • Plate 1 is connected to plate 13 by inserting rod 10 into and/or through orifice 12. Prior to locking down plug 11, plate 1 can be rotated with respect to plate 13, as indicated by arrows 17 (FIG. 1), and plate 1 can be translated longitudinally with respect to plate 13, as indicated by arrows 18 (FIG. 1). In this way, a particular relationship between plate 1 and plate 13 in terms of angle and distance can be made.
  • Plate 13 is attached to bone, in a particular embodiment iliac bone, by inserting screw 15 through aperture 14 in plate 13 and into the bone.
  • Plate 1 is attached to bone, in a particular embodiment sacral bone such as Sl, by inserting screw 2 through aperture 3 in plate 1 and into bone.
  • a plug is placed in hole 4 to cover at least a portion of screw 2 to inhibit screw 2 from backing out, as previously noted.
  • Connector 6 is placed over shaft 5 so that shaft 5 is at least partially within holes 29 of connector 6.
  • shaft 5 may be pivoted or otherwise moved to allow placement of connector 6, or once connector 6 has been placed to enable completion of the construct, or for other purposes of the surgeon.
  • Nut 9 is threaded onto shaft 5 and tightened as the surgeon desires so that connector 6 is squeezed between nut 9 and dome 8 of plate 1. Such tightening causes connector 6 to clamp spinal rod 7, and also holds connector 6 and plate 1 together.
  • protrusion 5 after tightening nut 9, either to return protrusion 5 automatically to an orientation substantially perpendicular to plate 1 (e.g. the multi-axial nature of protrusion 5 will thus have served only during implantation of the corrective apparatus), or to retain protrusion 5 in an orientation not perpendicular to plate 1, as seen in one embodiment in FIG. 6.
  • Plate 13 may be provided in and chosen from several models with different geometries and sizes, such as those shown in FIG. 8, which are shown fitted on the same rod 7. These examples, showing apertures 14 that range from substantial elongation to substantially circular and some of which include the angled portion of plate 13 described above, are some of the configurations that might be provided so that the geometry of the implant can be optimally adapted to the particular morphology of the patient and to the exact site of fixation of the implant. With such models, it is possible to achieve a whole variety of implant geometries with the aid of a single model of plate 1. In another embodiment, shown in FIG.
  • an implant is fixed on an iliac bone 16 by a screw 15, including a lateral extension plate 13 substantially as described above, in whose orifice 12 a spinal rod 7 is directly inserted.
  • rod 7 is fixed to other parts of the spine by slotted connectors 6, mounted on protrusions carried by bone anchoring screws.
  • Plate 101 may be a sacral plate, e.g. for implantation straddling vertebrae such as Sl and S2 of the patient. Plate 101 is fixed to these by two bone anchoring screws (not shown) which pass through orifices 102, 103 each formed at a respective end of plate 101.
  • This embodiment of plate 101 includes a lateral extension 104 provided with an aperture 105 through which a bone anchoring screw (such as screw 15) may pass and penetrate into, for example, iliac bone of the patient.
  • Extension 104 is laterally positioned and integral with the remainder of plate 1 in the illustrated embodiment, having a longitudinal direction that in one particular embodiment is substantially perpendicular to a longitudinal direction of the remainder of plate 1. Extension 104 has a first portion 104a and a second portion 104b. In the illustrated embodiment, first portion 104a is substantially planar, and second portion 104b is substantially planar, and there is an angle between the planes of portions 104a and 104b.
  • portion 104b is in a plane substantially parallel to upper surface 130 of plate 1, and aperture 105 is oblong or oval-shaped.
  • Plate 101 includes several aspects that are similar or identical to the structures and methods discussed above with respect to the embodiment of plate 1.
  • Plate 101 includes a protrusion 106 on which a connector 107 is to be fitted, which connector 107 is itself fitted on the rod 108 of the corrective device, the outline of which is represented in FIG. 4.
  • the connector 107 is clamped on a spherical outer surface of a dome 109 formed on the upper surf ace of the plate 101. This clamping is done with the aid of a nut 110 screwed onto a thread present on the protrusion 106.
  • the illustrated embodiments of protrusion 106, connector 107, dome 109 and nut 110 are essentially the same as protrusion or shaft 5, connector 6, dome 8 and nut 9 described above.
  • protrusion 106 is engaged through the lower face 116 of plate 101 and is passed through an orifice 117 arranged at the summit of dome 109.
  • Surface 111 of protrusion 106 thus comes into contact with inner surface 118 of dome 109.
  • Pin 119 may then be fitted, which passes through dome 109 and comes to lie in slot 112 traversing the lower part of protrusion 106.
  • point 111 of protrusion 106 comes into contact with inner surface 118 of dome 109.
  • Pin 119 may then be fitted, which passes through dome 109 and comes to lie in slot 112 traversing the lower part of protrusion 106.
  • pin 119 has a diameter practically equal to the width of slot 112, preventing any significant rotation of the protrusion 106 about its axis 115.
  • Extension 104 is attached to bone, in a particular embodiment iliac bone, by inserting a screw (e.g. a bone screw such as screw 15 discussed above) through aperture 105 in extension 104 and into the bone.
  • Plate 101 is further attached to bone, in a particular embodiment sacral bone such as Sl, by inserting screws (e.g. bone screws such as screw 2 discussed above) through apertures 102 and 103 in plate 101 and into bone.
  • a plug is placed in hole 132 to cover at least a portion of the screw in aperture 102 to inhibit the screw from backing out, as previously noted.
  • protrusion 106 it may be possible, after tightening nut 110, either to return protrusion 106 automatically to an orientation substantially perpendicular to plate 101 (e.g. the multi-axial nature of protrusion 106 will thus have served only during implantation of the corrective apparatus), or to retain protrusion 106 in an orientation not perpendicular to plate 101, as seen in one embodiment in FIG. 13.
  • the multi-axial nature of protrusion 106 in the illustrated embodiment, is substantially the same as that described above with respect to protrusion 5.

Landscapes

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

Abstract

La présente invention a trait à des implants orthopédiques pouvant être utilisés dans des applications rachidiennes. Dans un mode de réalisation, une partie plaque (1, 101) est munie d'une protubérance filetée (5) sur laquelle peut se monter une pièce de connexion pour tige orthopédique. La protubérance (5) peut avoir une orientation multiaxiale par rapport à ladite partie plaque. La partie plaque peut comporter un dôme (8) présentant une surface interne (26) éventuellement conique pouvant être traversée par une partie de la protubérance (5). Un axe (27) peut être prévu pour maintenir la protubérance (5) en place par rapport au dôme (8). Une deuxième partie plaque (13, 104) solidaire ou mobile par rapport à la première partie plaque (1, 101) peut être prévue, la partie pouvant être reliée à un os, par exemple, l'os iliaque le sacrum.
EP06770977A 2005-05-25 2006-05-23 Appareil d'implant rachidien Withdrawn EP1901669A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/137,206 US7850719B2 (en) 2004-05-26 2005-05-25 Spinal implant apparatus
PCT/US2006/019956 WO2006127727A2 (fr) 2005-05-25 2006-05-23 Appareil d'implant rachidien

Publications (1)

Publication Number Publication Date
EP1901669A2 true EP1901669A2 (fr) 2008-03-26

Family

ID=37055762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06770977A Withdrawn EP1901669A2 (fr) 2005-05-25 2006-05-23 Appareil d'implant rachidien

Country Status (6)

Country Link
EP (1) EP1901669A2 (fr)
JP (1) JP4944878B2 (fr)
KR (1) KR101216062B1 (fr)
AU (1) AU2006250290B2 (fr)
CA (1) CA2609139A1 (fr)
WO (1) WO2006127727A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4221032B2 (ja) * 2007-02-14 2009-02-12 昭和医科工業株式会社 コネクタ
FR2956803B1 (fr) * 2010-03-01 2013-06-07 Medicrea International Materiel d'osteosynthese vertebrale
US10179014B1 (en) 2012-06-01 2019-01-15 Nuvasive, Inc. Systems and methods for promoting sacroiliac joint fusion
WO2019079863A1 (fr) * 2017-10-24 2019-05-02 Tadeu Maia Cavali Paulo Dispositif de guidage pour la fixation et la transfixation de lames coulissantes pour implants dynamiques
CA3116344A1 (fr) 2018-10-31 2020-05-07 Dignity Health Systemes et procedes de fixation, de fusion et/ou de realignement de l'articulation sacro-iliaque
KR102346404B1 (ko) 2020-08-07 2022-01-03 주식회사 아이키 의료용 임플란트 치료기구 유지관리 시스템

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600112A1 (fr) * 2004-05-26 2005-11-30 SDGI Holdings, Inc. Implants pour un dispositif d'ostéosynthèse rachidienne et ensemble comprenant ces implants
FR2870713A1 (fr) * 2004-05-26 2005-12-02 Sdgi Holdings Inc Implant pour dispositif d'osteosynthese du rachis, et ensemble forme par cet implant, un connecteur et un ecrou

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR405691A (fr) 1908-11-20 1910-01-10 Usines Du Pied Selle Des Dispositif pour l'arrosage du sable de moulage
FR405692A (fr) 1908-11-21 1910-01-10 De L'ouest Perfectionnements apportés aux procédés de fabrication du charbon de paris
FR2692471B1 (fr) * 1992-06-19 1998-07-17 Pierre Roussouly Appareil de traitement du rachis.
US5810817A (en) * 1992-06-19 1998-09-22 Roussouly; Pierre Spinal therapy apparatus
FR2716794B1 (fr) 1994-03-03 1996-05-24 Sofamor Danek Group Inc Connecteur pour instrumentation d'ostéosynthèse rachidienne, destiné à une fixation lombaire ou sacrée ou ilio-sacrée.
US5490851A (en) * 1994-08-02 1996-02-13 Nenov; Nikolay N. Method and apparatus for treatment of idiopathic scoliosis
FR2776915B1 (fr) * 1998-04-03 2000-06-30 Eurosurgical Dispositif d'osteosynthese rachidienne adaptable aux differences d'alignement, d'angulation et d'enfoncement des vis pediculaires
FR2816195B1 (fr) * 2000-11-07 2003-01-03 Medicrea Materiel d'arthrodese vertebrale

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600112A1 (fr) * 2004-05-26 2005-11-30 SDGI Holdings, Inc. Implants pour un dispositif d'ostéosynthèse rachidienne et ensemble comprenant ces implants
FR2870713A1 (fr) * 2004-05-26 2005-12-02 Sdgi Holdings Inc Implant pour dispositif d'osteosynthese du rachis, et ensemble forme par cet implant, un connecteur et un ecrou

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006127727A2 *

Also Published As

Publication number Publication date
WO2006127727A3 (fr) 2007-05-24
KR20080027272A (ko) 2008-03-26
KR101216062B1 (ko) 2013-01-09
WO2006127727A2 (fr) 2006-11-30
AU2006250290A1 (en) 2006-11-30
JP4944878B2 (ja) 2012-06-06
CA2609139A1 (fr) 2006-11-30
AU2006250290B2 (en) 2011-05-26
JP2008541862A (ja) 2008-11-27

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