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1. WO1994028831 - CLAMPS FOR SPINAL FIXATION SYSTEMS

Publication Number WO/1994/028831
Publication Date 22.12.1994
International Application No. PCT/US1994/006738
International Filing Date 13.06.1994
Chapter 2 Demand Filed 12.01.1995
IPC
A61B 17/70 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws or the like
68Internal fixation devices
70Spinal positioners or stabilisers
CPC
A61B 17/701
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
70Spinal positioners or stabilisers ; ; Bone stabilisers comprising fluid filler in an implant
7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
7002Longitudinal elements, e.g. rods
701Longitudinal elements with a non-circular, e.g. rectangular, cross-section
A61B 17/7041
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
70Spinal positioners or stabilisers ; ; Bone stabilisers comprising fluid filler in an implant
7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
7041with single longitudinal rod offset laterally from single row of screws or hooks
Applicants
  • ADVANCED SPINE FIXATION SYSTEMS, INC. [US]/[US]
Inventors
  • HOWLAND, Robert, S.
Agents
  • SHARP, Janice, A.
Priority Data
08/078,72416.06.1993US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CLAMPS FOR SPINAL FIXATION SYSTEMS
(FR) BRIDES DE SERRAGE POUR SYSTEME DE FIXATION POUR LA COLONNE VERTEBRALE
Abstract
(EN)
This invention is a spinal fixation system. The spinal fixation system has a set of screw clamp assemblies (10) adapted for attachment of a rod (12). The spinal fixation system comprises anchor screws (50), and clamps (70, 90). The anchor screws (50) include a shoulder (54) width 'y' that varies within the anchor screws (50) in the set to seat a clamp (70, 90) at a desired distance above the plane of the spine into which the anchor screws (50) are implanted. The clamps (70, 90) include an arm length 'x' that varies within the clamps in the set to attach the rod (12) at a desired distance from the clamp seat site and apertures for receiving the rod within the clamps, wherein the apertures are set at an angle 'a' from a plane perpendicular to the long axis of the anchor screw when a clamp (70, 90) is seated on the anchor screw (50) that varies within the clamps in the set.
(FR)
L'invention concerne un système de fixation pour la colonne vertébrale consistant en un jeu d'ensembles brides de serrage à vis (10) adaptés pour maintenir une tige (12). Ce système comprend des vis d'ancrange (50) et des brides de serrage (70, 90). Ces vis (50) ont une largeur d'épaulement 'y' (54) variable afin de placer la mâchoire (70, 90) à la distance désirée par rapport à la surface de la vertèbre dans laquelle elles sont ancrées. Les brides (70, 90) ont une longueur 'x' variable afin de tenir la tige (12) à la distance souhaitée par rapport à leur point de fixation. Elles comportent, en outre, des échancrures destinées à recevoir la tige et ménagées de manière à former un angle 'a' par rapport à un plan perpendiculaire à l'axe longitudinal de la vis d'ancrage lorsqu'elles sont fixées à celle-ci. Cet angle varie selon les brides faisant partie dudit jeu.
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