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1. WO2000038584 - EXTERNAL FIXATOR STRUCTURE FOR THE TREATMENT OF FRACTURES, DISLOCATIONS AND POST-TRAUMATIC RIGIDITY OF THE ELBOW JOINT

Publication Number WO/2000/038584
Publication Date 06.07.2000
International Application No. PCT/EP1999/010312
International Filing Date 22.12.1999
Chapter 2 Demand Filed 20.07.2000
IPC
A61B 17/64 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
60for external osteosynthesis, e.g. distractors or contractors
64Devices extending alongside the bones to be positioned
CPC
A61B 17/6425
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
60for external osteosynthesis, e.g. distractors, contractors
64Devices extending alongside the bones to be positioned
6425specially adapted to be fitted across a bone joint
A61B 17/6433
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
60for external osteosynthesis, e.g. distractors, contractors
64Devices extending alongside the bones to be positioned
6433specially adapted for use on body parts other than limbs, e.g. trunk or head
A61B 17/6458
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
60for external osteosynthesis, e.g. distractors, contractors
64Devices extending alongside the bones to be positioned
6458with pin-clamps fixed at ends of connecting element
Applicants
  • ORTHOFIX S.R.L. [IT/IT]; Piazzale Principessa Clotilde, 8 I-20121 Milano, IT (AllExceptUS)
  • FACCIOLI, Giovanni [IT/IT]; IT (UsOnly)
  • TEN VELDHUIJS, Sander [IT/IT]; IT (UsOnly)
Inventors
  • FACCIOLI, Giovanni; IT
  • TEN VELDHUIJS, Sander; IT
Agents
  • BOTTI, Mario ; Botti & Ferrari S.r.l. Via A. Locatelli, 5 I-20124 Milano, IT
Priority Data
VI98A00024424.12.1998IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EXTERNAL FIXATOR STRUCTURE FOR THE TREATMENT OF FRACTURES, DISLOCATIONS AND POST-TRAUMATIC RIGIDITY OF THE ELBOW JOINT
(FR) STRUCTURE DE FIXATION EXTERIEURE UTILISEE DANS LE TRAITEMENT DES FRACTURES, DES LUXATIONS ET DE LA RIGIDITE POST-TRAUMATIQUE DE L'ARTICULATION DU COUDE
Abstract
(EN)
An external fixator structure for the treatment of fractures, dislocations and post-traumatic rigidity of the elbow joint includes a pair of clamps (5; 6) for bone screws (S; T) to be inserted into bones (U; O) from opposite sides respect to the anatomical axis of the joint (t), a pair of extremity elements (2, 3) connected to the corresponding clamps (5, 6) by means of respective universal joints (13; 14) provided with stops (21, 22), a central element (4) for the articulated connection of the extremity elements with a pair of slides (23; 24) connected by a bolt (25) defining a mechanical axis (m) of the fixator structure, stops (30; 36) associated to the slides, distraction means (46) capable of acting on the central element (4) for distraction of the mechanical axis (m) so as to take the load off the cartilage of the joint and favour mobility in the case of post-traumatic rigidity. The distraction means include a first auxiliary unit (46) composed of a third slide (47) which can anchored along the longitudinal guiding means (2'; 3') facing one of the first two slides and a second auxiliary unit (58) acting on the extremity elements for angular distraction.
(FR)
L'invention porte sur une structure de fixation extérieure utilisée dans le traitement des fractures, des luxations et de la rigidité post-traumatique de l'articulation du coude. Cette structure comprend une paire de pinces (5, 6) permettant d'insérer les vis (S, T) dans les os (U, O) à partir des côtés opposés par rapport à l'axe anatomique de l'articulation (t), une paire d'éléments (2, 3) d'extrémité raccordés aux pinces (5, 6) correspondantes au moyen de joints (13, 14) universels pourvus de butées (21, 22), un élément (4) central destiné au raccord articulé des éléments d'extrémité dotés d'une paire de bagues d'arrêt (23, 24) raccordées par un boulon (25) formant un axe (m) mécanique de la structure de fixation; des butées (30, 36) associées aux éléments de guidage; un dispositif de distraction (46) pouvant agir sur l'élément central en vue de détracter l'axe mécanique (m) de façon à décharger le cartilage de l'articulation et favoriser la mobilité en cas de rigidité post-traumatique. Le dispositif de distraction comprend une première unité auxiliaire (46) composée d'une troisième bague d'arrêt (47) pouvant se fixer le long du dispositif de guidage (2', 3') longitudinal opposé à l'une des deux premières bagues et une seconde unité (58) auxiliaire agissant sur les éléments d'extrémité de distraction angulaire.
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