Implant for osteosynthesis device with hook
AssigneeScient'x (Societe a Responsabilite Limitee)
InventorAlbert Alby
Life of this patent
Estimating the term…
Abstract
A spinal implant device arranged to clamp at least one vertebra includes a link rod, a hook defining a central bore and secured to a fixing head, a counterhook, an elongate member, a position control device and an interconnection arrangement between the counterhook and the hook. The fixing head has a pair of upwardly extending members forming a channel configured to accommodate the link rod. A nut engages the fixing head to exert a downward force onto the link rod. The elongate member attaches at one end to the counterhook and slidably engages the central bore of the hook such that the hook and the counterhook cooperate to define a clamp. The position control device cooperates with the hook and the elongate member to selectively maintain the hook in a position relative to the counterhook.
Claims12
A spinal implant device arranged to clamp at least one vertebra comprising:
- a link rod;
- a hook defining a central bore and securing to a fixing head, said fixing head having an external threaded portion and a pair of upwardly extending members delimiting between them a channel configured to accommodate said link rod;
- a nut configured and dimensioned to engage the external threaded portion of said upwardly extending members and exert an axial force against said fixing head to retain said link rod within said channel;
- a counterhook;
- an elongate member attached at one end to said counterhook and slidably engaging said central bore of said hook such that said hook and said counterhook cooperate to define a clamp independent of movement of said hook along said link rod;
- a position control device cooperating with said hook and said elongate member to selectively maintain said hook in a position relative to said counterhook;
- and
- an interconnection arrangement between said link rod and said elongate member preventing relative motion between said link rod and said elongate member.
Dependencies are inferred from the claim text.