WO2008091542A3 - Polyaxial bone screw with cam capture - Google Patents

Polyaxial bone screw with cam capture Download PDF

Info

Publication number
WO2008091542A3
WO2008091542A3 PCT/US2008/000671 US2008000671W WO2008091542A3 WO 2008091542 A3 WO2008091542 A3 WO 2008091542A3 US 2008000671 W US2008000671 W US 2008000671W WO 2008091542 A3 WO2008091542 A3 WO 2008091542A3
Authority
WO
WIPO (PCT)
Prior art keywords
retainer
receiver
bone screw
polyaxial bone
upper portion
Prior art date
Application number
PCT/US2008/000671
Other languages
French (fr)
Other versions
WO2008091542A2 (en
Inventor
Roger P. Jackson
Original Assignee
Jackson Roger P
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 Jackson Roger P filed Critical Jackson Roger P
Priority to JP2009547262A priority Critical patent/JP2010516388A/en
Priority to AU2008209568A priority patent/AU2008209568A1/en
Priority to EP08724601A priority patent/EP2114271A4/en
Priority to CA2674392A priority patent/CA2674392C/en
Publication of WO2008091542A2 publication Critical patent/WO2008091542A2/en
Publication of WO2008091542A3 publication Critical patent/WO2008091542A3/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
    • 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

Abstract

A polyaxial bone screw assembly includes a threaded shank body having an upper portion with a laterally extending lug and a retainer having an inner cam track for receiving the lug and thus attaching the shank upper portion to the retainer within a receiver. The retainer may be a closed or open ring. The receiver has a cavity and a U-shaped cradle defining a channel for receiving a longitudinal connecting member such as a spinal fixation rod. The retainer has an external surface that mates with an internal surface of the receiver, providing a ball joint.
PCT/US2008/000671 2007-01-22 2008-01-18 Polyaxial bone screw with cam capture WO2008091542A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009547262A JP2010516388A (en) 2007-01-22 2008-01-18 Multiaxial bone screw with cam capture
AU2008209568A AU2008209568A1 (en) 2007-01-22 2008-01-18 Polyaxial bone screw with cam capture
EP08724601A EP2114271A4 (en) 2007-01-22 2008-01-18 Polyaxial bone screw with cam capture
CA2674392A CA2674392C (en) 2007-01-22 2008-01-18 Polyaxial bone screw with cam capture

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US88164107P 2007-01-22 2007-01-22
US60/881,641 2007-01-22
US12/009,130 2008-01-16
US12/009,130 US8257398B2 (en) 2003-06-18 2008-01-16 Polyaxial bone screw with cam capture

Publications (2)

Publication Number Publication Date
WO2008091542A2 WO2008091542A2 (en) 2008-07-31
WO2008091542A3 true WO2008091542A3 (en) 2010-02-04

Family

ID=39499176

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/000671 WO2008091542A2 (en) 2007-01-22 2008-01-18 Polyaxial bone screw with cam capture

Country Status (6)

Country Link
US (1) US8257398B2 (en)
EP (1) EP2114271A4 (en)
JP (2) JP2010516388A (en)
AU (1) AU2008209568A1 (en)
CA (1) CA2674392C (en)
WO (1) WO2008091542A2 (en)

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US8926670B2 (en) 2003-06-18 2015-01-06 Roger P. Jackson Polyaxial bone screw assembly
US7967850B2 (en) 2003-06-18 2011-06-28 Jackson Roger P Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
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US11229457B2 (en) 2009-06-15 2022-01-25 Roger P. Jackson Pivotal bone anchor assembly with insert tool deployment
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US20080140136A1 (en) 2008-06-12
CA2674392A1 (en) 2008-07-31
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JP2010516388A (en) 2010-05-20
WO2008091542A2 (en) 2008-07-31

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