CA2361117A1 - Spinal fixation system - Google Patents

Spinal fixation system Download PDF

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Publication number
CA2361117A1
CA2361117A1 CA002361117A CA2361117A CA2361117A1 CA 2361117 A1 CA2361117 A1 CA 2361117A1 CA 002361117 A CA002361117 A CA 002361117A CA 2361117 A CA2361117 A CA 2361117A CA 2361117 A1 CA2361117 A1 CA 2361117A1
Authority
CA
Canada
Prior art keywords
connectors
bone
engaging member
fixation system
anchoring assemblies
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
CA002361117A
Other languages
French (fr)
Other versions
CA2361117C (en
Inventor
Thomas S. Mullane
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2361117A1 publication Critical patent/CA2361117A1/en
Application granted granted Critical
Publication of CA2361117C publication Critical patent/CA2361117C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
    • 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
    • A61B17/7044—Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae

Abstract

An adjustable spinal fixation system comprises a collection of anchoring assemblies attached, via a variety of connectors, to spine-stabilizing rods. The anchoring assemblies include a linking member attached in a ball-and-socket fashion to a bone-engaging member that is adapted to engage a spinal bone of a patient.
The linking member joins one of the included connectors to an associated bone-engaging member. The connectors are selectively attached to one of the stabilizing rods. The anchoring assemblies each include a support collar and a retention collet that cooperate to allow adjustment of the bone-engaging member and corresponding connector during surgery. When surgery is complete, a securing nut and locking bolt cooperate with the support collar and retention collet to maintain the relative position of the entire fixation system, preventing unwanted movement between the system components.
In one embodiment, the connectors are multi-piece units that may be added or removed without disturbing adjacent connectors.
CA002361117A 1999-01-25 2000-01-24 Spinal fixation system Expired - Fee Related CA2361117C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/237,175 US6050997A (en) 1999-01-25 1999-01-25 Spinal fixation system
US09/237,175 1999-01-25
PCT/US2000/001898 WO2000042930A1 (en) 1999-01-25 2000-01-24 Spinal fixation system

Publications (2)

Publication Number Publication Date
CA2361117A1 true CA2361117A1 (en) 2000-07-27
CA2361117C CA2361117C (en) 2008-04-01

Family

ID=22892633

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002361117A Expired - Fee Related CA2361117C (en) 1999-01-25 2000-01-24 Spinal fixation system

Country Status (7)

Country Link
US (1) US6050997A (en)
EP (2) EP1444958A1 (en)
AT (1) ATE266362T1 (en)
CA (1) CA2361117C (en)
DE (1) DE60010661T2 (en)
ES (1) ES2220433T3 (en)
WO (1) WO2000042930A1 (en)

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DE60010661T2 (en) 2004-09-30
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EP1444958A1 (en) 2004-08-11
DE60010661D1 (en) 2004-06-17

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