WO2007050373A3 - Adjustable bone screw assembly - Google Patents

Adjustable bone screw assembly Download PDF

Info

Publication number
WO2007050373A3
WO2007050373A3 PCT/US2006/040621 US2006040621W WO2007050373A3 WO 2007050373 A3 WO2007050373 A3 WO 2007050373A3 US 2006040621 W US2006040621 W US 2006040621W WO 2007050373 A3 WO2007050373 A3 WO 2007050373A3
Authority
WO
WIPO (PCT)
Prior art keywords
rod seat
screw body
bone screw
screw assembly
lower rod
Prior art date
Application number
PCT/US2006/040621
Other languages
French (fr)
Other versions
WO2007050373A2 (en
Inventor
Seung Kyu Daniel Kwak
Nam T Chao
Andrea Burke
Original Assignee
Depuy Spine Inc
Seung Kyu Daniel Kwak
Nam T Chao
Andrea Burke
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 Spine Inc, Seung Kyu Daniel Kwak, Nam T Chao, Andrea Burke filed Critical Depuy Spine Inc
Publication of WO2007050373A2 publication Critical patent/WO2007050373A2/en
Publication of WO2007050373A3 publication Critical patent/WO2007050373A3/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
    • 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
    • A61B17/7035—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

Landscapes

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

Abstract

A bone screw assembly includes a screw body, including anchor portion and rod-receiving portion, and a rod seat movably mounted in the screw body to allow for controlled angulation between a spinal connection element disposed in the rod seat and the screw body. The rod seat is pivotable in one or more selected directions about one or more axes relative to the screw body. The rod seat may include a first lower rod seat element disposed in a recess of the screw body having a cylindrical bottom surface to facilitate pivoting in a first direction. A second lower rod seat element is stacked on the first lower rod seat element and has a conical bottom surface abutting a top surface of the first lower rod seat element to facilitate pivoting in a second direction.
PCT/US2006/040621 2005-10-21 2006-10-18 Adjustable bone screw assembly WO2007050373A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/255,440 2005-10-21
US11/255,440 US7722651B2 (en) 2005-10-21 2005-10-21 Adjustable bone screw assembly

Publications (2)

Publication Number Publication Date
WO2007050373A2 WO2007050373A2 (en) 2007-05-03
WO2007050373A3 true WO2007050373A3 (en) 2007-07-12

Family

ID=37968372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/040621 WO2007050373A2 (en) 2005-10-21 2006-10-18 Adjustable bone screw assembly

Country Status (2)

Country Link
US (4) US7722651B2 (en)
WO (1) WO2007050373A2 (en)

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US8845700B2 (en) 2014-09-30
US20100198273A1 (en) 2010-08-05
US20140066993A1 (en) 2014-03-06
US7722651B2 (en) 2010-05-25
US20070118118A1 (en) 2007-05-24
US20110208250A1 (en) 2011-08-25
US7951174B2 (en) 2011-05-31
WO2007050373A2 (en) 2007-05-03

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