WO1995032677A1 - Hook for an occipito-cervical rod or plate - Google Patents
Hook for an occipito-cervical rod or plate Download PDFInfo
- Publication number
- WO1995032677A1 WO1995032677A1 PCT/IB1995/000406 IB9500406W WO9532677A1 WO 1995032677 A1 WO1995032677 A1 WO 1995032677A1 IB 9500406 W IB9500406 W IB 9500406W WO 9532677 A1 WO9532677 A1 WO 9532677A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- occiput
- hook
- plate
- cervical
- rod
- Prior art date
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
- A61B17/7056—Hooks with specially-designed bone-contacting part
-
- 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
-
- 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
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
Definitions
- the present invention relates to an occipito-cervical osteosynthesis instrumentation and a hook intended to be part of this instrumentation.
- This device has a drawback in that it cannot be shaped sufficiently to the anatomical configuration of the patient, above all in the cervical part. Indeed, it is difficult to adapt the distance between the two rods in the cervical part while achieving a suitable bending of the curved connecting plate.
- pathologies are encountered concerning the upper cervical vertebrae Atlas (Cl) and Axis (C2). Among these there are essentially found degenerative pathology ( cerviarthrosis ) and tumoral traumatic * pathology.
- this instrumentation comprises either rods or plates, their common purpous being to isolate the pathological segment by connecting the occiput to the subjacent healthy vertebrae.
- the means for connecting these different plates to the bone comprise the following elements: a) articular screws (inserted in the articular massives) and occipital screws, b ) occipital screws and laminar hooks bearing against the vertebrae, c ) metal wires constituting a bone lacing.
- hooks constituted by a body and a laminar portion which is adapted to enter the foramen opening at the base of the occiput against which the hook therefore bears.
- the anatomy of the edge of the foramen in the regions where the hooks must bear is such that, in practice, in order to be in a position to conciliate both a correct orientation of the rod which extends through the body of the hook and a suitable bearing of the laminar portion of the latter on the base of the occiput, it is necessary to remove a piece of the occiput and therefore to damage it.
- An object of the present invention is to provide a hook adapted to eliminate this drawback.
- the hook for an occipito-cervical rod or plate of an occipito-cervical osteosynthesis instrumentation comprises a body and a suitably profiled laminar portion adapted to penetrate the foramen opening at the base of the occiput against which it bears, the body being arranged to receive an osteosynthesis rod or plate and having a median plane of symmetry.
- the laminar portion is inclined relative to one side or the other of said plane of symmetry so as to be adapted to the anatomy of the edge of the occiput in the region of the foramen.
- the hook may be suitably oriented and its laminar portion may obtain a satisfactory support on the edge of the foramen without requiring the surgeon to previously remove a piece of the occiput, which is obviously preferable for the patient.
- the inclination of the laminar portion relative to the plane of symmetry is advantageously and preferentially on the order of about 45°, but may deviate from this angle in either direction.
- Fig. 1 is an elevational view to a small scale of an embodiment of the occipito-cervical instrumentation which may be equipped with hooks according to the invention, mounted on the first cervical vertebrae and on the occiput of a patient.
- Fig. 2 is a side elevational view of the instrumentation of the cervical vertebrae and of the occiput of Fig. 1.
- Fig. 3 is a side elevational view of a first embodiment of the occipital hook according to the invention.
- Fig. 4 is a side elevational view at a different angle of the hook of Fig. 3.
- Fig. 5 is an end elevational view of the posterior end of the hook of Figs. 3 and 4.
- Fig. 6 is a view similar to Fig. * 5 of an alternative embodiment of the hook.
- Fig. 7 is a side elevational view of a second embodiment of the hook according to the invention.
- the complete instrumentation placed on a cervical segment C1-C3 and on an occiput 6, shown in Figs. 1 and 2, comprises two separate parts 1 and 2, respectively a left part and a right part, Figs. 1 and 2 being views from the rear of the patient.
- the parts 1 and 2 are identical as manufactured and each part comprises a cervical rod 3 having asperities and an elongate occipital plate 5.
- the latter is in one piece with the rod 3 and extends from the end of the latter in the direction toward the occiput 6 in the position of use.
- Each rod 3 is constituted by two substantially rectilinear sections 7 and 8 which are pre-angulated so as to make therebetween an angle suitable for the anatomical curvature between the occiput 6 and the cervical vertebrae C1-C3.
- the occipital rod section 8 has a length much less than that of the cervical rod section 7, and is connected to the occipital plate 5 which is bent so as to enable it to conform to the curvature of the occipital shell.
- the rod section 8 connected to the plate 5 is adapted to extend, in the position of use, along the base of the occiput 6.
- Each part 1, 2 is so profiled as to be adapted to the anatomy of the occipito-cervical connection.
- each elongate plate 5 Provided in each elongate plate 5 are an oblong opening 9 and a circular opening 11, the latter being arranged in the vicinity of the junction between the plate 5 and the terminal portion 8 of the rod 3.
- Other hooks 26 of the closed body type have extending therethrough rod sections 7 just in front of the elbow formed by the latter with the terminal sections 8.
- Laminar or strip portions 30 extend in the conventional manner from the ends of the bodies of the hooks 26 and penetrate the foramen opening 27 at the base of the occiput 6 against which they bear. Screws fix the hooks 26 to the rods 3 in the known manner. in the region of the cervical vertebrae C2-C3, the rods 3 are fixed by means of hooks 28 having an open body and a screw threaded inner plug (vertebra C2) and laminar hooks 29 having a closed body (vertebra C3).
- a transverse connection device 31 between the two rods 3 completes the instrumentation at the level of the vertebra C4.
- the hook 32 adapted to replace the hook 26 for each rod, comprises a body 33 of open type, i.e. having a U shape delimited by two branches 34 whose inner surfaces form a channel having a semi-cylindrical bottom 35 adapted to serve as a seat for the rod 3.
- Tapped portions 36 are arranged on the inner surfaces of the branches 34 which permit the screwing of a screw threaded plug (not shown) whereby the rod 3 can be clamped in the body 33, which has a plane of symmetry P with respect to which the two branches 34 are symmetrical.
- the body 33 is extended by a curved laminar or strip portion 37 which is inclined relative to one side or the other of the plane of symmetry P so as to adapt itself to the anatomy of the edge of the occiput 6 in the region of the foramen 27. More precisely, the laminar portion 37 is itself symmetrical on each side of a median plane PI angularly offset from the plane P by an angle A (Fig. 5) which advantageously may be on the order of about 45°. This inclination may be either relative to the right side of the plane P (in viewing the hook 32 from its posterior end, i.e. from the body 33) as shown in the embodiment of Fig. 5, or relative to the left side of the plane P of the body 33 as illustrated in the alternative embodiment of Fig. 6.
- the hook 38 comprises a body 39 identical to the body of the hook of Figs. 5 to 7 of the aforementioned U.S. patent application.
- the height h of the body 39 is small with respect to its length L and there is provided in the body 38 a groove 19 for receiving and guiding the occipital plate 10, this groove being delimited by two parallel branches 21 of the body 39.
- These branches 21 form with the bottom 20 a U-sectioned channel which is shallow relative to its length.
- a tapped hole 22 is provided in the body 38, opens onto the bottom 20, and is in alignment with the oblong opening 9 when the plate 10 is inserted between the branches 19.
- the plate 10 is fixed to the hook 16 by the screw 24.
- the plates 10 differ from the plates 5 in that they are extended downwardly from the occiput 6 to the level of the foramen opening 27.
- the plates 10 are bent and connected to the rods 3 just below the foramen opening 27.
- the hook 39 differs from the hook shown in Figs. 5 to 7 of the aforementioned U.S. patent application in that its laminar portion 41 extends on each side of a median plane of symmetry P3 which is inclined relative to the plane of symmetry P of the body 39, either on the left side (as shown in full lines) or on the right side of the plane P as shown in dot-dash lines 41a.
- the inclination B of the median plane P3 to the plane of symmetry P may vary more or less, as the inclination A of the preceding embodiment so as to be adapted to the particular anatomy in this region of the patient.
- the laminar portion 37 or 41 has a curvature adapted to the thickness of 'the occipito-cervical shell.
- Figs. 3 to 7 may be subjected to variations.
- the hook may have a body different from those shown in Figs. 3 to 7, for example the body may be closed in the same way as that of the hooks 26 of Figs. 1 and 2.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU24172/95A AU2417295A (en) | 1994-05-27 | 1995-05-24 | Hook for an occipito-cervical rod or plate |
EP95918119A EP0760631A1 (en) | 1994-05-27 | 1995-05-24 | Hook for an occipito-cervical rod or plate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/250,580 US5542946A (en) | 1994-05-27 | 1994-05-27 | Hook for an occipito-cervical rod or plate of an occipito-cervical osteosynthesis instrumentation |
US08/250,580 | 1994-05-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1995032677A1 true WO1995032677A1 (en) | 1995-12-07 |
WO1995032677B1 WO1995032677B1 (en) | 1996-01-11 |
Family
ID=22948327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1995/000406 WO1995032677A1 (en) | 1994-05-27 | 1995-05-24 | Hook for an occipito-cervical rod or plate |
Country Status (6)
Country | Link |
---|---|
US (1) | US5542946A (en) |
EP (1) | EP0760631A1 (en) |
AU (1) | AU2417295A (en) |
TW (1) | TW295541B (en) |
WO (1) | WO1995032677A1 (en) |
ZA (1) | ZA954317B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2743491A1 (en) * | 1996-01-16 | 1997-07-18 | Bfl Medical Sa | Superior cervical surgical stabiliser |
WO2013116377A1 (en) * | 2012-01-30 | 2013-08-08 | University Of Iowa Research Foundation | System that secures an electrode array to the spinal cord for treating back pain |
US9364660B2 (en) | 2010-11-11 | 2016-06-14 | University Of Iowa Research Foundation | Electrode array device configured for placement inside the dura for direct spinal cord stimulation |
US9403008B2 (en) | 2012-01-30 | 2016-08-02 | University Of Iowa Research Foundation | Managing back pain by applying a high frequency electrical stimulus directly to the spinal cord |
US10071240B2 (en) | 2010-11-11 | 2018-09-11 | University Of Iowa Research Foundation | Floating electrodes that engage and accommodate movement of the spinal cord |
US10575876B2 (en) | 2016-04-20 | 2020-03-03 | K2M, Inc. | Spinal stabilization assemblies with bone hooks |
Families Citing this family (38)
Publication number | Priority date | Publication date | Assignee | Title |
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ATE214897T1 (en) * | 1994-11-16 | 2002-04-15 | Advanced Spine Fixation Syst | GRIP HOOK FOR FIXING THE SPINAL SEGMENTS |
FR2783411B1 (en) * | 1998-09-18 | 2000-12-01 | Eurosurgical | POSTERIOR SPINAL OSTEOSYNTHESIS DEVICE |
US6277119B1 (en) | 1999-10-21 | 2001-08-21 | Electro-Biology, Inc. | External fixation system |
US6616664B2 (en) | 1999-10-21 | 2003-09-09 | Ebi L.P. | Clamp assembly for an external fixation system |
US6524315B1 (en) | 2000-08-08 | 2003-02-25 | Depuy Acromed, Inc. | Orthopaedic rod/plate locking mechanism |
US6902565B2 (en) | 2001-02-21 | 2005-06-07 | Synthes (U.S.A.) | Occipital plate and system for spinal stabilization |
US8167917B2 (en) * | 2003-09-24 | 2012-05-01 | Spinefrontier Lls | Apparatus and method for spine fixation |
FR2860703B1 (en) * | 2003-10-14 | 2006-08-25 | Eurosurgical | OCCIPIENT FIXING DEVICE |
WO2005037115A1 (en) * | 2003-10-14 | 2005-04-28 | Eurosurgical | Device for occipital fixation |
US20050080414A1 (en) * | 2003-10-14 | 2005-04-14 | Keyer Thomas R. | Spinal fixation hooks and method of spinal fixation |
US8241337B2 (en) * | 2004-05-25 | 2012-08-14 | Brockmeyer Douglas L | Occipitocervical plate |
US7942912B2 (en) * | 2004-05-25 | 2011-05-17 | University Of Utah Research Foundation | Occipitocervical plate |
US7959653B2 (en) * | 2004-09-03 | 2011-06-14 | Lanx, Inc. | Spinal rod cross connector |
US20060155284A1 (en) * | 2005-01-07 | 2006-07-13 | Depuy Spine Sarl | Occipital plate and guide systems |
US7621942B2 (en) * | 2005-03-21 | 2009-11-24 | Zimmer Spine, Inc. | Variable geometry occipital fixation plate |
US20060229611A1 (en) * | 2005-03-30 | 2006-10-12 | Sdgi Holdings, Inc. | Spinal rod connector |
US8177823B2 (en) * | 2005-06-30 | 2012-05-15 | Depuy Spine Sarl | Orthopedic clamping hook assembly |
US7695500B2 (en) * | 2006-03-10 | 2010-04-13 | Custom Spine, Inc. | Polyaxial occipital plate |
US20070299441A1 (en) * | 2006-06-09 | 2007-12-27 | Zachary M. Hoffman | Adjustable Occipital Plate |
US7776070B2 (en) * | 2006-08-02 | 2010-08-17 | Warsaw Orthopedic, Inc. | Occipital plating systems and methods |
US7901433B2 (en) | 2006-10-04 | 2011-03-08 | Zimmer Spine, Inc. | Occipito-cervical stabilization system and method |
US8147527B2 (en) | 2006-11-28 | 2012-04-03 | Zimmer Spine, Inc. | Adjustable occipital plate |
US8636737B2 (en) | 2006-12-27 | 2014-01-28 | Zimmer Spine, Inc. | Modular occipital plate |
US8246662B2 (en) * | 2006-12-27 | 2012-08-21 | Zimmer Spine, Inc. | Modular occipital plate |
WO2008112831A1 (en) * | 2007-03-12 | 2008-09-18 | Arya Nick Shamie | Improved cervical support system |
US9060813B1 (en) | 2008-02-29 | 2015-06-23 | Nuvasive, Inc. | Surgical fixation system and related methods |
US8506567B2 (en) | 2009-02-04 | 2013-08-13 | Lanx, Inc. | Occipital plate fixation system |
US8998961B1 (en) | 2009-02-26 | 2015-04-07 | Lanx, Inc. | Spinal rod connector and methods |
US9387013B1 (en) | 2011-03-01 | 2016-07-12 | Nuvasive, Inc. | Posterior cervical fixation system |
US9247962B2 (en) | 2011-08-15 | 2016-02-02 | K2M, Inc. | Laminar hook insertion device |
CN102488549B (en) * | 2011-11-28 | 2014-07-30 | 北京纳通科技集团有限公司 | Split type occipital plate |
US8337532B1 (en) | 2011-12-08 | 2012-12-25 | Spine Wave, Inc. | Methods for percutaneously extending an existing spinal construct |
US20140277155A1 (en) | 2013-03-14 | 2014-09-18 | K2M, Inc. | Taper lock hook |
TWI572319B (en) * | 2013-03-27 | 2017-03-01 | 梓源生技有限公司 | Pedicle screw system |
US20150230828A1 (en) | 2014-02-20 | 2015-08-20 | K2M, Inc. | Spinal fixation device |
DE112017003415T5 (en) | 2016-07-07 | 2019-03-28 | Mark, S. Stern | Spinous process LAMINAKLEMMVORRICHTUNG |
CN107865686A (en) * | 2016-09-26 | 2018-04-03 | 青岛大学附属医院 | A kind of dichotomous atlas and axis hook fixed system of intelligence |
RU196467U1 (en) * | 2019-12-18 | 2020-03-02 | Общество с ограниченной ответственностью "ВИП Технологии" | Laminar polyaxial hook |
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SU1223904A1 (en) * | 1982-01-27 | 1986-04-15 | Московский Областной Ордена Трудового Красного Знамени Научно-Исследовательский Клинический Институт Им.М.Ф.Владимирского | Arrangement for correcting spinal column |
EP0517059A1 (en) * | 1991-06-05 | 1992-12-09 | Synthes AG, Chur | Pedicle hook |
FR2687561A1 (en) * | 1992-02-20 | 1993-08-27 | Jbs Sa | Device for straightening, fixing, compressing and elongating cervical vertebrae |
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SU1517954A2 (en) * | 1987-09-23 | 1989-10-30 | Саратовский научно-исследовательский институт травматологии и ортопедии | Arrangement for correcting and fixing spinal column |
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1994
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-
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- 1995-05-24 WO PCT/IB1995/000406 patent/WO1995032677A1/en not_active Application Discontinuation
- 1995-05-24 EP EP95918119A patent/EP0760631A1/en not_active Withdrawn
- 1995-05-24 AU AU24172/95A patent/AU2417295A/en not_active Abandoned
- 1995-05-26 ZA ZA954317A patent/ZA954317B/en unknown
- 1995-07-29 TW TW084107859A patent/TW295541B/zh active
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2743491A1 (en) * | 1996-01-16 | 1997-07-18 | Bfl Medical Sa | Superior cervical surgical stabiliser |
US9364660B2 (en) | 2010-11-11 | 2016-06-14 | University Of Iowa Research Foundation | Electrode array device configured for placement inside the dura for direct spinal cord stimulation |
US9486621B2 (en) | 2010-11-11 | 2016-11-08 | University Of Iowa Research Foundation | Implanting an electrode array against the spinal cord inside the dura for stimulating the spinal cord and treating pain |
US10071240B2 (en) | 2010-11-11 | 2018-09-11 | University Of Iowa Research Foundation | Floating electrodes that engage and accommodate movement of the spinal cord |
US10576272B2 (en) | 2010-11-11 | 2020-03-03 | University Of Iowa Research Foundation | High frequency stimulation of the spinal cord from inside the dura |
US11413449B2 (en) | 2010-11-11 | 2022-08-16 | University Of Iowa Research Foundation | Medical device that applies electrical stimulation to the spinal cord from inside the dura for treating back pain and other conditions |
WO2013116377A1 (en) * | 2012-01-30 | 2013-08-08 | University Of Iowa Research Foundation | System that secures an electrode array to the spinal cord for treating back pain |
US9254379B2 (en) | 2012-01-30 | 2016-02-09 | University Of Iowa Research Foundation | System that secures an electrode array to the spinal cord for treating back pain |
US9403008B2 (en) | 2012-01-30 | 2016-08-02 | University Of Iowa Research Foundation | Managing back pain by applying a high frequency electrical stimulus directly to the spinal cord |
US9572976B2 (en) | 2012-01-30 | 2017-02-21 | University Of Iowa Research Foundation | System that secures an electrode array to the spinal cord for treating back pain |
US9950165B2 (en) | 2012-01-30 | 2018-04-24 | University Of Iowa Research Foundation | Method for causing stochastic depolarization in the spinal cord to inhibit transmission of synchronous action potentials |
US10575876B2 (en) | 2016-04-20 | 2020-03-03 | K2M, Inc. | Spinal stabilization assemblies with bone hooks |
Also Published As
Publication number | Publication date |
---|---|
ZA954317B (en) | 1996-01-24 |
TW295541B (en) | 1997-01-11 |
US5542946A (en) | 1996-08-06 |
AU2417295A (en) | 1995-12-21 |
EP0760631A1 (en) | 1997-03-12 |
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