ES2597847T3 - Mecanismo de bloqueo poliaxial - Google Patents

Mecanismo de bloqueo poliaxial Download PDF

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Publication number
ES2597847T3
ES2597847T3 ES07819617.7T ES07819617T ES2597847T3 ES 2597847 T3 ES2597847 T3 ES 2597847T3 ES 07819617 T ES07819617 T ES 07819617T ES 2597847 T3 ES2597847 T3 ES 2597847T3
Authority
ES
Spain
Prior art keywords
valley
bone plate
locking mechanism
central opening
inner groove
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.)
Active
Application number
ES07819617.7T
Other languages
English (en)
Inventor
Beat Mürner
Philippe Lehmann
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.)
Stryker European Holdings I LLC
Original Assignee
Stryker European Holdings I LLC
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 Stryker European Holdings I LLC filed Critical Stryker European Holdings I LLC
Application granted granted Critical
Publication of ES2597847T3 publication Critical patent/ES2597847T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A61B17/8042—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 the additional component being a cover over the screw head
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • A61B17/8877—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit
    • A61B17/888—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit the driver bit acting on the central region of the screw head

Abstract

Un mecanismo de bloqueo poliaxial (10) para bloquear un mecanismo de fijación con respecto a una placa ósea (50) que comprende: un cuerpo (12) disponible dentro de una abertura no circular (52) formado en la placa ósea (50), teniendo el cuerpo (12) una forma de anillo circular e incluyendo: una abertura central (28) para recibir el mecanismo de fijación; y una ranura (14) formada a través del cuerpo (12) y en la abertura central (28); el cuerpo (12) incluye además dos picos (16a, 16b, 16c) y un valle (18a, 18b, 18c) para su uso en acoplamiento con un accionador (60) para girar el cuerpo (12); en el que en una posición aflojada el cuerpo (12) es capaz de un movimiento poliaxial con respecto a la placa ósea (50) y al girar el cuerpo (12) mediante el accionador (60) a una posición de apriete el cuerpo (12), el mecanismo de fijación y la placa ósea (50) se fijan los unos con respecto a los otros; caracterizado por que los picos y el valle forman flancos ahusados (30a-f) de modo que una dimensión superior del valle es menor que una dimensión inferior del valle (18a, 18b, 18c); y por que un surco interior que se extiende de manera circunferencial (22) formado en una superficie interior del cuerpo (12), en el que en la posición aflojada una porción de cabeza del mecanismo de fijación no se acopla en el surco interior cuando el mecanismo de fijación se recibe en la abertura central y en la posición de apriete el cuerpo (12) la porción de cabeza del mecanismo de fijación se acopla en el surco interior.

Description

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Claims (1)

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ES07819617.7T 2006-11-09 2007-11-06 Mecanismo de bloqueo poliaxial Active ES2597847T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US595795 2000-06-16
US11/595,795 US8287575B2 (en) 2006-11-09 2006-11-09 Polyaxial locking mechanism
PCT/EP2007/009597 WO2008055648A2 (en) 2006-11-09 2007-11-06 Polyaxial locking mechanism

Publications (1)

Publication Number Publication Date
ES2597847T3 true ES2597847T3 (es) 2017-01-23

Family

ID=39303422

Family Applications (1)

Application Number Title Priority Date Filing Date
ES07819617.7T Active ES2597847T3 (es) 2006-11-09 2007-11-06 Mecanismo de bloqueo poliaxial

Country Status (4)

Country Link
US (1) US8287575B2 (es)
EP (1) EP2083724B1 (es)
ES (1) ES2597847T3 (es)
WO (1) WO2008055648A2 (es)

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Also Published As

Publication number Publication date
EP2083724A2 (en) 2009-08-05
WO2008055648A3 (en) 2008-07-03
EP2083724B1 (en) 2016-08-10
US20080114359A1 (en) 2008-05-15
US8287575B2 (en) 2012-10-16
WO2008055648A2 (en) 2008-05-15

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