WO2001028440A3 - Device for spinal deformity reduction - Google Patents

Device for spinal deformity reduction Download PDF

Info

Publication number
WO2001028440A3
WO2001028440A3 PCT/US2000/041343 US0041343W WO0128440A3 WO 2001028440 A3 WO2001028440 A3 WO 2001028440A3 US 0041343 W US0041343 W US 0041343W WO 0128440 A3 WO0128440 A3 WO 0128440A3
Authority
WO
WIPO (PCT)
Prior art keywords
tension rod
hollow cylinder
telescopic housing
distal end
housing
Prior art date
Application number
PCT/US2000/041343
Other languages
French (fr)
Other versions
WO2001028440A2 (en
Inventor
B Thomas Barker
Thomas Zdeblick
Original Assignee
Sdgi Holdings Inc
B Thomas Barker
Thomas Zdeblick
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 Sdgi Holdings Inc, B Thomas Barker, Thomas Zdeblick filed Critical Sdgi Holdings Inc
Priority to AU27463/01A priority Critical patent/AU2746301A/en
Publication of WO2001028440A2 publication Critical patent/WO2001028440A2/en
Publication of WO2001028440A3 publication Critical patent/WO2001028440A3/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
    • A61B17/7041—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
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
    • A61B17/7077—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for moving bone anchors attached to vertebrae, thereby displacing the vertebrae
    • A61B17/7079—Tools requiring anchors to be already mounted on an implanted longitudinal or transverse element, e.g. where said element guides the anchor motion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4504—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter

Abstract

A device for pulling a vertebral anchor with a strain gauge in combination with a tension rod. The device has a cylindrical telescopic housing made of a first hollow cylinder received inside a second hollow cylinder such that the two hollow cylinders define a longitudinal passage from the proximal to the distal end of the cylindrical telescopic housing. The tension rod is slidably disposed within the longitudinal passageway and has a means mounted on or near its distal end to attach to vertebral anchor (or bone screw). The first and second hollow cylinders are biased apart by a mechanical spring, which resides inside the second hollow cylinder. A means for moving said tension rod in a proximal direction with respect to said telescopic housing is then operatively attached to the housing, as well as, a strain gauge to directly measure the amount of tension placed on the tension rod when the device is in use.
PCT/US2000/041343 1999-10-20 2000-10-20 Device for spinal deformity reduction WO2001028440A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27463/01A AU2746301A (en) 1999-10-20 2000-10-20 Device for spinal deformity reduction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/421,029 1999-10-20
US09/421,029 US6251111B1 (en) 1999-10-20 1999-10-20 Jack for pulling a vertebral anchor

Publications (2)

Publication Number Publication Date
WO2001028440A2 WO2001028440A2 (en) 2001-04-26
WO2001028440A3 true WO2001028440A3 (en) 2001-11-08

Family

ID=23668901

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/041343 WO2001028440A2 (en) 1999-10-20 2000-10-20 Device for spinal deformity reduction

Country Status (3)

Country Link
US (1) US6251111B1 (en)
AU (1) AU2746301A (en)
WO (1) WO2001028440A2 (en)

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Also Published As

Publication number Publication date
WO2001028440A2 (en) 2001-04-26
US6251111B1 (en) 2001-06-26
AU2746301A (en) 2001-04-30

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