WO2004084744A3 - Spinal fixation devices of improved strength and rigidity - Google Patents

Spinal fixation devices of improved strength and rigidity Download PDF

Info

Publication number
WO2004084744A3
WO2004084744A3 PCT/US2004/008374 US2004008374W WO2004084744A3 WO 2004084744 A3 WO2004084744 A3 WO 2004084744A3 US 2004008374 W US2004008374 W US 2004008374W WO 2004084744 A3 WO2004084744 A3 WO 2004084744A3
Authority
WO
WIPO (PCT)
Prior art keywords
rigidity
improved strength
receiver
rod
spinal fixation
Prior art date
Application number
PCT/US2004/008374
Other languages
French (fr)
Other versions
WO2004084744A2 (en
Inventor
John R Cournoyer
Michael S Varieur
P Alan Ruiz
Anthony R Carlone
Original Assignee
Depuy Acromed Sarl
John R Cournoyer
Michael S Varieur
P Alan Ruiz
Anthony R Carlone
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 Depuy Acromed Sarl, John R Cournoyer, Michael S Varieur, P Alan Ruiz, Anthony R Carlone filed Critical Depuy Acromed Sarl
Priority to AU2004224366A priority Critical patent/AU2004224366A1/en
Priority to CA002519239A priority patent/CA2519239A1/en
Priority to BRPI0408602-3A priority patent/BRPI0408602A/en
Priority to JP2006507343A priority patent/JP2006520652A/en
Priority to EP04757845A priority patent/EP1605844A2/en
Priority to MXPA05010016A priority patent/MXPA05010016A/en
Publication of WO2004084744A2 publication Critical patent/WO2004084744A2/en
Publication of WO2004084744A3 publication Critical patent/WO2004084744A3/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
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • 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
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7041—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

Abstract

This invention relates to spinal implants of improved strength and rigidity. One embodiment relates to U-shaped, top loading spinal rod receivers (10) wherein the threading (14) on the receiver ends above the top of the rod when the rod is in the locked positions. Other embodiments relate to improved thread designs based on minimizing the gap between the minor diameter of the receiver and the minor diameter of the securing member and by ensuring an equal or substantially equal number of full width threads on each of the flanges of the U-shaped receiver.
PCT/US2004/008374 2003-03-21 2004-03-19 Spinal fixation devices of improved strength and rigidity WO2004084744A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2004224366A AU2004224366A1 (en) 2003-03-21 2004-03-19 Spinal fixation devices of improved strength and rigidity
CA002519239A CA2519239A1 (en) 2003-03-21 2004-03-19 Spinal fixation devices of improved strength and rigidity
BRPI0408602-3A BRPI0408602A (en) 2003-03-21 2004-03-19 spinal fixation devices for improved strength and rigidity
JP2006507343A JP2006520652A (en) 2003-03-21 2004-03-19 Spinal fixation device with improved strength and rigidity
EP04757845A EP1605844A2 (en) 2003-03-21 2004-03-19 Spinal fixation devices of improved strength and rigidity
MXPA05010016A MXPA05010016A (en) 2003-03-21 2004-03-19 Spinal fixation devices of improved strength and rigidity.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/393,575 2003-03-21
US10/393,575 US20040186473A1 (en) 2003-03-21 2003-03-21 Spinal fixation devices of improved strength and rigidity

Publications (2)

Publication Number Publication Date
WO2004084744A2 WO2004084744A2 (en) 2004-10-07
WO2004084744A3 true WO2004084744A3 (en) 2004-11-11

Family

ID=32988182

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/008374 WO2004084744A2 (en) 2003-03-21 2004-03-19 Spinal fixation devices of improved strength and rigidity

Country Status (9)

Country Link
US (1) US20040186473A1 (en)
EP (1) EP1605844A2 (en)
JP (1) JP2006520652A (en)
KR (1) KR20050107816A (en)
AU (1) AU2004224366A1 (en)
BR (1) BRPI0408602A (en)
CA (1) CA2519239A1 (en)
MX (1) MXPA05010016A (en)
WO (1) WO2004084744A2 (en)

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