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US 5,380,325 AGranted
Osteosynthesis device for spinal consolidation
AssigneeBiomat
InventorsMichel Lahille, Jean-Philippe Lemaire, Sami Khalife
Life of this patent
Estimating the term…
Abstract
A consolidation rod and plural members, such as pedicular screws and vertebral claws, have threaded sections extending from a head and fitted with a nut. A rigid fast connection between the rod and a member providing high adhesion is ensured by a fastener for clamping the rod owing to the screwing of the nut. The fastener comprises a first bore sliding on the rod, a slit opening into the first bore and narrowed by nut screwing, and a second bore passing through the slit and passed through by the threaded section. An indented plate, or a bar with threaded ends fitted with hooks transversely stabilizes two consolidation rods. A connector longitudinally stabilizes two consolidation rods.
Claims20
An osteosynthesis device comprising
- a rod, a member having a threaded section extending from a head and fitted with a nut, and a connecting fastener,
- said fastener comprising a first smooth bore passed through by said rod, a first slit opening axially into said first bore, and a second smooth bore substantially perpendicular to said first slit and passed through by a portion of said threaded member section located between said member head and said nut, and a second slit opening axially into said second bore and having a width greater than the diameter of said threaded member section.
An osteosynthesis device comprising:
- two rods,
- plural members each having a threaded section extending from a head and fitted with a nut,
- plural connecting fasteners,
- each of said fasteners comprising a first bore passed through by one of said two rods, a first slit opening axially into said first bore, and a second bore substantially perpendicular to said first slit and passed through by a portion of said threaded section of one of said plural members located between said head of and said nut on said one of said plural members, and a second slit opening axially into said second bore and having a width greater than the diameter of said threaded section,
- a plate extending transversal to said two rods and having a longitudinal slot,
- two hooks each having a threaded section passing through said plate slot and a holding portion partially surrounding one of said two rods, and
- two nuts respectively screwed onto threaded hook sections for tightening said plate against said two rods thereby confining said rods between said plate and said hook holding portions.
4 more elements
An osteosynthesis device comprising
- two rods,
- plural members each having a threaded section extending from a head and fitted with a nut,
- plural connecting fasteners,
- each of said fasteners comprising a first bore passed through by one of said two rods, a first slit opening axially into said first bore, and a second bore substantially perpendicular to said first slit and passed through by a portion of said threaded section of one of said plural members located between said head of and said nut on said one of said plural members, and a second slit opening axially into said second bore and having a width greater than the diameter of said threaded member section,
- a bar extending transversal to said two rods,
- two hooks having hooking portions to be hooked to said two rods, and
- means for quickly securing said hooks to ends of said bar.
4 more elements
An osteosynthesis device comprising
- two rods,
- plural members each having a threaded section extending from a head and fitted with a nut,
- plural connecting fasteners,
- each of said fasteners comprising a first bore passed through by one of said two rods, a first slit opening axially into said first bore, and a second bore substantially perpendicular to said first slit and passed through by a portion of said threaded section of one of said plural members located between said head of and said nut on said one of said plural members, and a second slit opening axially into said second bore and having a width greater than the diameter of said threaded member section,
- a bar extending transversal to said two rods and having ends which each comprise a longitudinal tapped portion and a longitudinal flat surface, and
- two hooks each having a hooking portion to be hooked to one of said two rods and an oblong hole for free receiving one of the bar ends,
- said hole having a tapped longitudinal portion for meshing with said tapped portion of said one of said bar ends, and a smooth portion into which opens a tapped hole containing a locking screw pressed against said flat surface of said one of said ends.
4 more elements
An osteosynthesis device comprising
- two rods substantially parallel,
- plural members each having a threaded section extending from a head and fitted with a nut,
- plural connecting fasteners,
- each of said fasteners comprising a first bore passed through by one of said two rods, a first slit opening axially into said first bore, and a second bore substantially perpendicular to said first slit and passed through by a portion of said threaded section of one of said plural members located between said head of and said nut on said one of said plural members, and a second slit opening axially into said second bore and having a width greater than the diameter of said threaded section,
- a connector having a longitudinal orifice with an oblong cross-section passed through by said two rods, and
- a means for spacing apart said two rods thereby blocking said rods in said orifice.
3 more elements
An osteosynthesis device, comprising
- plural rods,
- plural members each having a threaded section extending from a head and fitted with a nut,
- plural connecting fasteners,
- each of said fasteners comprising a first bore passed through by one of said two rods, a first slit opening axially into said first bore, and a second bore substantially perpendicular to said first slit and passed through by a portion of said threaded section of one of said plural members located between said head of and said nut on said one of said plural members, and a second slit opening axially into said second bore and having a width greater than the diameter of said threaded section,
- a connector having a longitudinal orifice with an oblong cross-section passed through by said rods, and
- plural means fewer by one unit in number than said rods for each spacing apart respective two of said plural rods thereby blocking said plural rods in said orifice.
3 more elements
Dependencies are inferred from the claim text.