WO2004071276A3 - Bone plate system - Google Patents

Bone plate system Download PDF

Info

Publication number
WO2004071276A3
WO2004071276A3 PCT/US2004/003205 US2004003205W WO2004071276A3 WO 2004071276 A3 WO2004071276 A3 WO 2004071276A3 US 2004003205 W US2004003205 W US 2004003205W WO 2004071276 A3 WO2004071276 A3 WO 2004071276A3
Authority
WO
WIPO (PCT)
Prior art keywords
screw
lock
bone
bore
recess
Prior art date
Application number
PCT/US2004/003205
Other languages
French (fr)
Other versions
WO2004071276A2 (en
Inventor
Matthew N Songer
Hansen Yuan
Thomas S Kilpela
Brian P Janowski
Greg A Berrevoets
Original Assignee
Pioneer Lab Inc
Matthew N Songer
Hansen Yuan
Thomas S Kilpela
Brian P Janowski
Greg A Berrevoets
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 Pioneer Lab Inc, Matthew N Songer, Hansen Yuan, Thomas S Kilpela, Brian P Janowski, Greg A Berrevoets filed Critical Pioneer Lab Inc
Priority to US10/553,940 priority Critical patent/US8172885B2/en
Publication of WO2004071276A2 publication Critical patent/WO2004071276A2/en
Publication of WO2004071276A3 publication Critical patent/WO2004071276A3/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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
    • 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
    • A61B17/7059—Cortical plates
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head

Abstract

Bone plate and bone screw lock systems are provided for use in surgical implants. In a preferred form, the bone plate or other implantable member defines a bore for receiving a bone screw and a recess in communication with the bore. A screw lock operates in the bore at the recess to engage and lock the bone screw against unintentional movement. The preferred screw lock is shifted about the screw between an unlocked position to allow manipulation of the screw and a locked position in which the screw lock grips the head of the screw to prevent movement of the screw. The screw lock preferably has a c-shaped collar configuration with opposing ends and a camming engagement with the plate or other member in the recess. Upon rotation of the screw lock, the camming engagement causes the ends of the collar to either shift toward one another in which the collar compresses about the screw to lock the screw or away from another to unlock the screw head.
PCT/US2004/003205 2003-02-05 2004-02-05 Bone plate system WO2004071276A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/553,940 US8172885B2 (en) 2003-02-05 2004-02-05 Bone plate system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44500503P 2003-02-05 2003-02-05
US60/445,005 2003-02-05

Publications (2)

Publication Number Publication Date
WO2004071276A2 WO2004071276A2 (en) 2004-08-26
WO2004071276A3 true WO2004071276A3 (en) 2005-02-17

Family

ID=32869304

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/003205 WO2004071276A2 (en) 2003-02-05 2004-02-05 Bone plate system

Country Status (2)

Country Link
US (1) US8172885B2 (en)
WO (1) WO2004071276A2 (en)

Cited By (1)

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US7255699B2 (en) 2001-12-14 2007-08-14 Paul Kamaljit S Spinal plate assembly

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US9119677B2 (en) * 2005-12-09 2015-09-01 DePuy Synthes Products, Inc. Spinal plate and drill guide
US20120029576A1 (en) * 2006-05-26 2012-02-02 Mark Richard Cunliffe Bone Fixation Device
US10085780B2 (en) 2006-05-26 2018-10-02 Mark Richard Cunliffe Bone fixation device
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US9717530B1 (en) 2016-02-03 2017-08-01 Texas Scottish Rite Hospital For Children External fixation struts
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