IE904456A1 - Multifunctional spinal osteosynthesis device - Google Patents

Multifunctional spinal osteosynthesis device

Info

Publication number
IE904456A1
IE904456A1 IE445690A IE445690A IE904456A1 IE 904456 A1 IE904456 A1 IE 904456A1 IE 445690 A IE445690 A IE 445690A IE 445690 A IE445690 A IE 445690A IE 904456 A1 IE904456 A1 IE 904456A1
Authority
IE
Ireland
Prior art keywords
locking
fixing part
shaped
groove
nut
Prior art date
Application number
IE445690A
Other versions
IE74188B1 (en
Inventor
Jean-Louis Vignaud
Patrick Henry
Original Assignee
Vignaud Jean Louis
Patrick Henry
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 Vignaud Jean Louis, Patrick Henry filed Critical Vignaud Jean Louis
Publication of IE904456A1 publication Critical patent/IE904456A1/en
Publication of IE74188B1 publication Critical patent/IE74188B1/en

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
    • A61B17/701—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
    • A61B17/7002—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
    • A61B17/7041—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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8665—Nuts
    • A61B2017/867—Nuts with integral locking or clamping means
    • A61B2017/868—Nuts with integral locking or clamping means self-locking due to part of nut being deformed upon tightening

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Neurology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Treating Waste Gases (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Materials For Medical Uses (AREA)
  • Lasers (AREA)
  • Electrotherapy Devices (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Road Paving Structures (AREA)
  • Communication Control (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Fats And Perfumes (AREA)
  • Furniture Connections (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Saccharide Compounds (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Measurement Of Radiation (AREA)

Abstract

The object of the invention is a rachis ostheosynthesis device with pedicular screws of the type comprising a pin (1) having a threaded ogival shape and a threaded head (3) which are separated by a hexagonal body (2), said screws being connected by a linking element (5, 6), characterized in that it is comprised, additionally, of an unique fixing part (7, 8) provided with a hole (9) for the passage of said threaded head to which is screwed a nut (4, 4') for locking the assembly consisting of the fixing part (7. 8) and of the linking element (5, 6) on the head (3), one of the two members, that is to say either the fixing part or the linking element, being conformed on its lower face so as to form a groove (17, 21) for receiving and rotationally locking said hexagonal body (2). Application to osteosynthesis.

Description

A MULTI-FUNCTION DEVICE FOR THE OSTEOSYNTHESIS OF RACHIS !ohh.
JEAN-LOUIS VIGNAUD, a French citizen, of 10 Impasse Francois Audoin, F-33400 Talence, France and PATRICK HENRY, a French citizen, of 19 avenue de la Republique, F-92400 Courbevoie, France.
A MULTI-FUNCTION DEVICE FOR THE OSTEOSYNTHESIS OF RACHIS This invention is relative to a device permitting an osteosynthesis of rachis from the rear by means of implants, a portion of which is intended for bone anchorage in vertebral pedicles and another portion is intend5 ed to accommodate either a plate or a rod in order to connect the screws together.
As a rule, pedicular screws are implanted, that are connected solely either through plates or through rods.
The purpose of the invention is to provide an ins10 trument of simple design, permitting a specially accurate and reliable positioning and locking of a plate as well as a rod, in order to facilitate the osteosynthesis of rachis, regardless of the anatomical conditions and deformations caused by kyphosis, scoliosis or scolio-kyphosis.
To this purpose, one object of the invention is a device for rachis osteosynthesis with pedicular screws of the type comprising an ogival-shaped threaded point and a threaded head, that are separated by a hexagonal body, said screws being connected by a connection member, characteri20 sed in that it also has one fixing part provided with a hole for the passage of said threaded head on which a locking nut is screwed for the assembly consisting of the fixing part and the connection member on said head, one of either the fixing part or the connecting member being shaped on its inner face in order to provide a groove to accommodate said hexagonal body and locking it against rotation, said part, in form of a U-shaped part, being also striated on its face opposing the plate.
According to an application of the device, more particularly to the fixing of a rod, the device is characterized in that said fixing part comprises, at its upper face, a groove in the bottom of which said hole is provided, one flank of which forms a shoulder, whereas the other flank defines a concave-shaped surface for the accommodation of said rod, said, locking nut being provided ats lower face with a truncated portion capable of abutting against said shoulder on the one hand, and against said rod on the other hand and in that the lower face of said fixing part comprises said groove for accommodating and locking the hexagonal body .
According to an application of the device, more particularly to the fixing of a plate, the device is characte20 rized in that said fixing part is a U-shaped part overlapping the upper face of said plate provided with said passage hole and flanked by two lateral parallel profusions, in that said plate comprises oval-shaped holes and is provided with transversal striae on its upper face and with said accommodation and locking groove for the hexagonal body on its lower face.
Figure 1 of the drawing is an exploded view of an embodiment of the device of the invention for fixing a rod, figure 2 is a cross section view of the device of fi30 gure 2 in an assembled condition, figure 3 is an exploded view of an embodiment of the device for fixing a plate, The device of the invention comprises pedicular screws of a known general type, consisting of three parts: a point 1, a body 2, a head 3.
The screw is made from materials approved for surgical uses in order to be bio-compatible and to eliminate any breaks of the materials when it enters the vertebral body.
The screw point 1 is threaded and ogival-shaped and it is advantageous that the conicity of thread bottom and thread top is different.
The head of the screw 3 is cy1indrica1-shaped with a threading compatible for a locking nut (4,4*) for either a rod 5 (figure 1) or a plate 6 (figure 3) by means of one auxiliary part (7 or 8) provided with a smooth hole 9 at its central portion and threaded onto the head 3.
Nuts (4,4’) have an extension at their top in form of a cylindrical tubular part 10 provided with slots 11 permitting the nuts to be locked whereas the opposing parts 10 are slightly moved closer to each other by means of a plier prior to the insertion of the screw head 3 into the auxiliary part 7,8 .
Besides, means are provided on either the sole auxiliary part or the connecting member for pedicular screws, in order to provide a seat for accommodation of and a locking means against rotation of the body 2 of screws with respect to said connecting member.
In the embodiment illustrated in figures 1 and 2, the auxiliary or sole intermediary part 7 is interposed between a rod 12 featuring a cylindrical section of a diameter adequate to withstand the rachis stresses and efforts, whereas the smooth surface has the advantage to permit a flexion in order to achieve a bending to some extent, to match the distorsions or the anatomy of rachis.
At its upper face, the part 7 comprises a central groove 13 in the bottom of which there is a hole 9. One of the flanks of groove 13 is straight and forms a shoulder and the other groove flank defines a concave-shaped surface 15 housing the rod 12 by the hole 9.
In this embodiment, nuts 4 are extended at their lower portion by a truncated portion 16 capable of abutting (figure 2) on the one hand, on the· edge of shoulder 14, and on the other hand, on rod 12 located in its housing 15 when the assembly 7,12 is fixed and locked on a screw head 3 .
At its lower part, the part is provided with a groove 17 (figure 2) associated to the body 2 and accommodating it while simultaneously locking it against rotation.
In the embodiment of figure 3, the sole intermediary 5 part 8 is generally shaped as a U-part designed to overlap a sacrolumbar plate 18, with prebend and rectangular cross section, and comprising here and there oval-shaped holes 19 for accommodating the heads of screws 3.
The upper face of plate 18 is provided with transver10 sal striae 20, and the lower face is provided with a groove similar to the groove 13 of the part 7, and designed to accommodate and lock the bodies of screws 2.
The intermediary part 8 has a central portion featuring a hole 9, preferably oval-shaped for easier introduction of the screw head 3 and flanked by two lateral protusions for guiding and wedging the part 8 along the upper striated face of plate 18, whereas the face of part 8 opposing striae 20 features matching striae.
Striae eliminate the need to move screw head 3 in the 20 oval-shaped hole 19, once the nut 4' is clamped.
Nut 4' is similar to that shown in figures 1 and 2, except that it has no truncated portion at its base.
By altering the screw sizes (1,2,3), the device of the invention makes it possible, in whatever embodiment, to achieve vertebral stabilizations on all the height of the dorsal sacrolumbar rachis.

Claims (5)

1. A device for the osteosynthesis of rachis having pedicular screws of the type that comprises a threaded, ogival-shaped point (1) and a threaded head (3) that are separated by a hexagonal body (2), said screws being linked 5 by a connection member (5,6), characterised in that it also comprises a sole fixing part (7,8) provided with a passage hole (9) for said threaded head on which a nut (4,4') is screwed for locking the assembly consisting of the fixing part (7,8) and the connection member (5,6) on said head (3), 10 one of these , either the fixing part or the connection member having its inner face shaped in order to provide a groove (17,21) for the accommodation and locking against rotation of said hexagonal body (2).
2. A device according to Claim 1, more particularly 15 intended for fixing a rod (5) characterized in that said fixing part (7) at its upper face comprises a groove (13) in the bottom of which said hole (9) is provided, with one flank of which forming a shoulder (14) whereas the other flank defines a concave-shaped accommodation surface (1bj for 20 said rod (5), whereas said locking nut (4) is at its inner face provided with a truncated portion (16), capable of abutting on said shoulder (14) on the one hand, and on said rod (5) on the other hand, and in that the inner face of said fixing part (7) comprises said groove (17) for 25 accommodation and locking of the hexagonal body (2).
3. A device according to Claim 1, more particularly intended for the fixing of connection members shaped as an elongated plate (6), with openings from place to place for the passage of pedicular screw heads (3), characterised 30 in that said fixing part is a U-shaped part (8), overlapping the upper face of said plate (6), provided with said preferably elongated passage hole (9) and flanked by two parallel lateral protusions (22), in that said plate (6) has elongated holes (19) and at its upper face is provided with trans35 versal striae (20), and at its Lower face is provided with said groove (21) for the accommodation and locking of the hexagonal body (2), said part (8) being also provided with striae on its face opposing said plate (6).
4. A device according to one of the Claims 1 to 3, characterised in that said nut (4,4') has an extension at 5. Its upper part in form of a cylindrical tubular portion (10) that is split diametrally (11) for the purpose of nut locking .
5. A device for the osteosynthesis of rachis according to any preceding claim, substantially as hereinbefore described with reference ot and as illustrated in the accompanying drawings . :ed this the 10th day of December, 1990 R. KELLY & CO. A^^M^XX^EXECUTIVE
IE445690A 1990-02-08 1990-12-10 Multifunctional spinal osteosynthesis device IE74188B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9001633A FR2657775B1 (en) 1990-02-08 1990-02-08 MULTIFUNCTIONAL SPINDLE OR PLATE RACHIDIAN INSTRUMENTATION.

Publications (2)

Publication Number Publication Date
IE904456A1 true IE904456A1 (en) 1991-08-14
IE74188B1 IE74188B1 (en) 1997-07-16

Family

ID=9393619

Family Applications (1)

Application Number Title Priority Date Filing Date
IE445690A IE74188B1 (en) 1990-02-08 1990-12-10 Multifunctional spinal osteosynthesis device

Country Status (24)

Country Link
EP (1) EP0441084B1 (en)
JP (1) JP2554298B2 (en)
AT (1) ATE135551T1 (en)
AU (1) AU645780B2 (en)
BG (1) BG60286B2 (en)
CA (1) CA2051408C (en)
DE (1) DE69026067T2 (en)
DK (1) DK0441084T3 (en)
DZ (1) DZ1470A1 (en)
ES (1) ES2086391T3 (en)
FI (1) FI102512B (en)
FR (1) FR2657775B1 (en)
GR (1) GR3020170T3 (en)
HU (1) HU209422B (en)
IE (1) IE74188B1 (en)
IS (1) IS1587B (en)
MA (1) MA22018A1 (en)
NO (1) NO180322C (en)
PT (1) PT96202B (en)
RO (1) RO107081B1 (en)
RU (1) RU2043081C1 (en)
TN (1) TNSN90149A1 (en)
TR (1) TR25016A (en)
WO (1) WO1991011967A1 (en)

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US10034690B2 (en) 2014-12-09 2018-07-31 John A. Heflin Spine alignment system

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US5451225A (en) * 1993-06-10 1995-09-19 Texas Scottish Rite Hospital For Crippled Children Fastener for external fixation device wires and pins
US5766173A (en) * 1993-06-10 1998-06-16 Texas Scottish Rite Hospital For Children Distractor mechanism for external fixation device
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FR2713473A1 (en) * 1993-12-13 1995-06-16 Caffiniere De Jean Yves Posterior vertebral osteosynthesis system
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FR2719759B1 (en) * 1994-05-16 1996-08-30 Charles Khalife Intervertebral osteosynthesis system, in particular with transverse reinforcement device.
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FR2736258B1 (en) * 1995-07-07 1997-10-17 Eurosurgical DEVICE FOR FIXING ON A STEM OF AN ORGAN, PARTICULARLY FOR A RACHIDIAN ORTHOPEDIC INSTRUMENTATION
DE19607517C1 (en) 1996-02-28 1997-04-10 Lutz Biedermann Bone screw for osteosynthesis
US5713900A (en) * 1996-05-31 1998-02-03 Acromed Corporation Apparatus for retaining bone portions in a desired spatial relationship
FR2768609B1 (en) 1997-09-23 2000-01-14 Dimso Sa SCREW AND PLATE SYSTEM FOR OSTEOSYNTHESIS OF THE RACHIS
ES2166258B1 (en) * 1999-05-11 2004-11-16 Jesus Burgos Flores PROCEDURE AND APPLIANCES USED FOR SURGICAL TREATMENT BY PREVIOUS ENDOSCOPIC TECHNIQUE OF DISEASES OF THE VERTEBRAL COLUMN, ESPECIALLY SCHOLIOSIS.
EP1080692A1 (en) 1999-09-03 2001-03-07 Bone & Joint Research S.A. Flexible connection for bone anchor means
AU2000277906A1 (en) * 2000-10-05 2002-04-15 Jesus Burgos Flores Method and apparatus for surgical treatment of diseases of the vertebral column,especially scoliosis, using anterior endoscopic technique
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FR2831420B1 (en) 2001-10-30 2004-07-16 Vitatech APPARATUS FOR HOLDING THE SPIN WITH JOINTING ASSEMBLY
FR2831419B1 (en) 2001-10-30 2004-07-16 Vitatech APPARATUS FOR HOLDING RUBBER ASSEMBLY WITH BALL JOINT
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10034690B2 (en) 2014-12-09 2018-07-31 John A. Heflin Spine alignment system
US10736668B2 (en) 2014-12-09 2020-08-11 John A. Heflin Spine alignment system

Also Published As

Publication number Publication date
NO180322B (en) 1996-12-23
DE69026067D1 (en) 1996-04-25
FI906130A (en) 1991-08-09
CA2051408C (en) 1997-12-30
IS1587B (en) 1996-03-01
CA2051408A1 (en) 1991-08-09
FI102512B1 (en) 1998-12-31
DK0441084T3 (en) 1996-07-22
DZ1470A1 (en) 2004-09-13
RU2043081C1 (en) 1995-09-10
GR3020170T3 (en) 1996-09-30
HU913515D0 (en) 1992-02-28
TR25016A (en) 1992-09-01
NO180322C (en) 1997-04-02
FI906130A0 (en) 1990-12-13
NO905367D0 (en) 1990-12-12
FR2657775B1 (en) 1992-05-29
AU7251191A (en) 1991-09-03
MA22018A1 (en) 1991-07-01
ATE135551T1 (en) 1996-04-15
FR2657775A1 (en) 1991-08-09
FI102512B (en) 1998-12-31
PT96202B (en) 1998-07-31
PT96202A (en) 1991-09-30
IS3657A7 (en) 1991-08-09
TNSN90149A1 (en) 1991-03-05
ES2086391T3 (en) 1996-07-01
AU645780B2 (en) 1994-01-27
RO107081B1 (en) 1993-09-30
IE74188B1 (en) 1997-07-16
WO1991011967A1 (en) 1991-08-22
HU209422B (en) 1994-06-28
HUT60120A (en) 1992-08-28
NO905367L (en) 1991-08-09
BG60286B2 (en) 1994-04-29
EP0441084B1 (en) 1996-03-20
EP0441084A1 (en) 1991-08-14
JPH04506923A (en) 1992-12-03
JP2554298B2 (en) 1996-11-13
DE69026067T2 (en) 1996-10-02

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