WO2005060845A8 - Bone fixation assembly and method of securement - Google Patents

Bone fixation assembly and method of securement

Info

Publication number
WO2005060845A8
WO2005060845A8 PCT/US2004/032798 US2004032798W WO2005060845A8 WO 2005060845 A8 WO2005060845 A8 WO 2005060845A8 US 2004032798 W US2004032798 W US 2004032798W WO 2005060845 A8 WO2005060845 A8 WO 2005060845A8
Authority
WO
WIPO (PCT)
Prior art keywords
screw
bushing
bone
plate assembly
passage
Prior art date
Application number
PCT/US2004/032798
Other languages
French (fr)
Other versions
WO2005060845A1 (en
Inventor
Brian E Dalton
Original Assignee
Aesculap Inc
Brian E Dalton
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 Aesculap Inc, Brian E Dalton filed Critical Aesculap Inc
Priority to CA2548504A priority Critical patent/CA2548504C/en
Priority to EP04785377A priority patent/EP1691699B1/en
Priority to JP2006541150A priority patent/JP4456607B2/en
Priority to AU2004305481A priority patent/AU2004305481B2/en
Priority to ES04785377T priority patent/ES2404031T3/en
Priority to BRPI0417500A priority patent/BRPI0417500B1/en
Publication of WO2005060845A1 publication Critical patent/WO2005060845A1/en
Publication of WO2005060845A8 publication Critical patent/WO2005060845A8/en
Priority to HK07105619.3A priority patent/HK1099504A1/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
    • A61B17/7059—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
    • 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
    • A61B17/8023—Variable length plates adjustable in both directions
    • 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

Abstract

A bone plate assembly (10) is provided for fixation of spaced vertebra. The bone plate assembly (10) has at least one through passage (15, 25) for securing the plate to bone with a bone fixation screw (23). The threaded shaft of a bone fixation screw (23) is inserted through a bushing (30) located in the through passage (15, 22) of the bone plate assembly (10) and the screw (23) is thereby threadably secured to the underlying bone and the bushing (30) is then compressed inward against the head (25) of the screw (23) with cams (37) that are actuated by rotating the bushing in the through passage (15, 22) whereby the screw (23) is locked relative to the bone plate assembly (10). The bushing (30) is not only compressed inwardly against the head (25) of the screw (23) but is also compressed downwardly by the cams (37) into a seat (39) to clamp separate elements (11, 12) of the bone plate assembly (10) together. An access passage (51) in upper surface (41, 42) of bushing (30) is dimensioned (d) for receiving screw head (25) therethrough for access to a socket bore (35) within the bushing (30).
PCT/US2004/032798 2003-12-09 2004-10-06 Bone fixation assembly and method of securement WO2005060845A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA2548504A CA2548504C (en) 2003-12-09 2004-10-06 Bone fixation assembly and method of securement
EP04785377A EP1691699B1 (en) 2003-12-09 2004-10-06 Bone fixation assembly
JP2006541150A JP4456607B2 (en) 2003-12-09 2004-10-06 Bone fixation assembly and method of attachment
AU2004305481A AU2004305481B2 (en) 2003-12-09 2004-10-06 Bone fixation assembly and method of securement
ES04785377T ES2404031T3 (en) 2003-12-09 2004-10-06 Bone fixation set
BRPI0417500A BRPI0417500B1 (en) 2003-12-09 2004-10-06 bone fixation set
HK07105619.3A HK1099504A1 (en) 2003-12-09 2007-05-29 Bone fixation assembly

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/731,625 US6945975B2 (en) 2003-07-07 2003-12-09 Bone fixation assembly and method of securement
US10/731,625 2003-12-09
US10/815,160 US6979334B2 (en) 2003-07-07 2004-03-31 Bone fixation assembly and method of securement
US10/815,160 2004-03-31

Publications (2)

Publication Number Publication Date
WO2005060845A1 WO2005060845A1 (en) 2005-07-07
WO2005060845A8 true WO2005060845A8 (en) 2005-11-03

Family

ID=37579085

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/032798 WO2005060845A1 (en) 2003-12-09 2004-10-06 Bone fixation assembly and method of securement

Country Status (10)

Country Link
US (4) US6945975B2 (en)
EP (1) EP1691699B1 (en)
JP (1) JP4456607B2 (en)
CN (1) CN100435743C (en)
AU (1) AU2004305481B2 (en)
BR (1) BRPI0417500B1 (en)
CA (1) CA2548504C (en)
ES (1) ES2404031T3 (en)
HK (1) HK1099504A1 (en)
WO (1) WO2005060845A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD754857S1 (en) 2009-10-14 2016-04-26 Nuvasive, Inc. Bone plate

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