CA2382033A1 - Multi-axial bone screw assembly - Google Patents

Multi-axial bone screw assembly Download PDF

Info

Publication number
CA2382033A1
CA2382033A1 CA002382033A CA2382033A CA2382033A1 CA 2382033 A1 CA2382033 A1 CA 2382033A1 CA 002382033 A CA002382033 A CA 002382033A CA 2382033 A CA2382033 A CA 2382033A CA 2382033 A1 CA2382033 A1 CA 2382033A1
Authority
CA
Canada
Prior art keywords
bone anchor
receiver
crown
bone screw
screw assembly
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002382033A
Other languages
French (fr)
Other versions
CA2382033C (en
Inventor
B. Thomas Barker
John Stewart Young
Craig Squires
David Brumfield
Chris Johnson
Dennis J. Buchanan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Warsaw Orthopedic Inc
Original Assignee
Sdgi Holdings, Inc.
B. Thomas Barker
John Stewart Young
Craig Squires
David Brumfield
Chris Johnson
Dennis J. Buchanan
Warsaw Orthopedic, Inc.
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, John Stewart Young, Craig Squires, David Brumfield, Chris Johnson, Dennis J. Buchanan, Warsaw Orthopedic, Inc. filed Critical Sdgi Holdings, Inc.
Publication of CA2382033A1 publication Critical patent/CA2382033A1/en
Application granted granted Critical
Publication of CA2382033C publication Critical patent/CA2382033C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • A61B2017/00831—Material properties
    • A61B2017/00858—Material properties high friction, non-slip
    • 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 bottom-loading multi-axial bone anchor apparatus is disclosed. The apparatus includes a receiver member (30), a crown member (70), a bone anchor (50) and a retaining member (90). The receiver member (30) defines an upper opening (31a) and a lower opening (31b), which may form part of the same opening (32), a channel (45), and a grove (41).
The crown member (70) and bone anchor (50) are loaded into the lower opening (31b) of the receiver member (30), and the retaining member (90) fits around the bone anchor (50) and into the groove (41) in the receiver member (30).
The bone anchor (50) is capable of multi-axial positioning with respect to the receiver member (30). An elongated member (R) is placed in the channel (45) of the receiver member (30), contacting the crown member (70), and a compression member (120) is applied via the upper opening (31a). The compression member (120) presses down on the elongated member (R), which presses down on the crown member (70) and locks the bone anchor (50) between the crown member (70) and the retaining member (30).
CA002382033A 1999-09-01 2000-08-29 Multi-axial bone screw assembly Expired - Lifetime CA2382033C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/387,991 US6280442B1 (en) 1999-09-01 1999-09-01 Multi-axial bone screw assembly
US09/387,991 1999-09-01
PCT/US2000/040771 WO2001015612A1 (en) 1999-09-01 2000-08-29 Multi-axial bone screw assembly

Publications (2)

Publication Number Publication Date
CA2382033A1 true CA2382033A1 (en) 2001-03-08
CA2382033C CA2382033C (en) 2008-08-19

Family

ID=23532168

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002382033A Expired - Lifetime CA2382033C (en) 1999-09-01 2000-08-29 Multi-axial bone screw assembly

Country Status (10)

Country Link
US (5) US6280442B1 (en)
EP (1) EP1214006B1 (en)
JP (1) JP4318421B2 (en)
CN (1) CN1192749C (en)
AT (1) ATE306854T1 (en)
AU (1) AU773530B2 (en)
CA (1) CA2382033C (en)
DE (1) DE60023323T2 (en)
ES (1) ES2250201T3 (en)
WO (1) WO2001015612A1 (en)

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US20100198270A1 (en) 2010-08-05
US20020026193A1 (en) 2002-02-28
DE60023323D1 (en) 2005-11-24
CN1192749C (en) 2005-03-16
ATE306854T1 (en) 2005-11-15
DE60023323T2 (en) 2006-05-18
EP1214006B1 (en) 2005-10-19
AU773530B2 (en) 2004-05-27
ES2250201T3 (en) 2006-04-16
JP4318421B2 (en) 2009-08-26
US8529604B2 (en) 2013-09-10
AU8036300A (en) 2001-03-26
CA2382033C (en) 2008-08-19
US20040116929A1 (en) 2004-06-17
EP1214006A1 (en) 2002-06-19
US6280442B1 (en) 2001-08-28
JP2003508109A (en) 2003-03-04
US6660004B2 (en) 2003-12-09
US7727261B2 (en) 2010-06-01
WO2001015612A1 (en) 2001-03-08
US20110071577A1 (en) 2011-03-24
CN1371258A (en) 2002-09-25
US8298274B2 (en) 2012-10-30

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