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AU1280088A Expired / Lapsed AU ⏱️ 0.0 years remaining

Vertebral screw for an osteosynthesis device in particular of the lumbar and dorsal rachis

Assignee: Societe de Fabrication de Material Orthopedique en Abrege SOFAMOR SNC
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Filing: 1988-03-08
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Granted: —
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Expires: 2008-03-08
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Abstract

No abstract record available.

Inventors

  • 👤 Yves Cotrel

Bibliographic Details

Application Number —
Jurisdiction AU
Data Source google_patents
Last Synchronized 2026-10-23 05:17
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7032; A61B17/7034; A61B17/7049; A61B17/7052; A61B17/84; A61B17/86; A61B17/8605; A61B17/7002

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 2243 words
A vertebral screw for an osteosynthesis device in particular of the lumbar and dorsal rachis and of the sacrum, comprising a screw-threaded stem exended by a shaped neck and a terminal body, wherein, in axial section, the neck has, in combination, a concave portion having a width increasing in the direction away from the screw-threaded stem, then a convex portion defining the base of the body, the profile of or' the concave portion being so determined as to permit the o 4 o t insertion of the screw to about mid-way of the length of.the neck without damage to the bone element, while the convex portion is so dimensioned that the screwing is not hindered by the neighbouring bone parts. a. o 0* 2. A screw according to claim 1, wherein the concave portion is so dinensionei that the diameter mid-way along the length of the neck does not exceed by about more than 60 the outside S, diameter of the screw-threaded stem. 0 a 3. A screw according to claim 1 or 2, wherein the body is provided with a transverse opening for the passage of a rod, two tapped holes being provided in the body in a di- rection parallel to the axis of the screw and on each side of said axis for receiving two corresponding screws for clamping the rod. 4. A screw according to any one of the claims 1 to 3, composed of a biocompatible material, for example austenitic stainless steel. ~1-C7 b- a~'a 14 A vertebral screw for an osteosynthesis device, substantially as hereinbefore described with reference to and as shown in Fig. 1, or Fig. 2, or Fig. 3, or Fig. 4, or Fig. 5, or Fig. 6, or Fig. 7, or Fig. 9A, or Fig. 9B, or Fig. 10 of the accompanying drawings. 6. The steps or features disclosed herein or any combination thereof. DATED this 8th day of March, 1988 SOCIETE DE FABRICATION DE MATERIEL ORTHOPEDIQUE By Its Patent Attorneys DAVIES COLLISON I'll tl I -1I "II e 11 1- 1.z t i I I 1- ill*, VrI- .1 j III .o T i ,Ilt., I. 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