Coupling assemblies for spinal implants

Details Coupling assemblies for spinal implants Coupling assemblies for spinal implants

A - Human Necessities

61

B

A61B 17/70 (2006.01)

Patent

CA 2618073

The forces exerted on a spinal implant (60) by one or more coupling assemblies (10, 110) are controlled to facilitate the use of the implant in spinal stabilization and other procedures. The coupling assemblies are structured to distribute the forces exerted on the implant while engaging the implant to the coupling assembly and providing at least one of a rigid, semi-rigid or variable engagement of the coupling assembly with one or more anatomical structures of the spinal column. The coupling assembly comprises an anchor member (12, 112) , a receiver member (20) receiving the implant, a seat member (30, 130) positioned between the implant and the anchor member and having an implant support surface (34) , and a securing member (40) with an implant engaging surface (54). The implant engaging surface is maintained in aligned relationship with the implant support surface.

Selon l~invention, les forces exercées sur un implant vertébral (60) par un ou plusieurs ensembles de couplage (10, 110) sont régulées de manière à faciliter l~utilisation de l~implant lors d~une opération de stabilisation vertébrale et lors d~autres opérations. Les ensembles de couplage sont structurés en vue de distribuer les forces exercées sur l~implant pendant l~entrée en prise de l~implant avec l~ensemble de couplage et d~obtenir au moins une prise rigide, semi-rigide ou variable de l~ensemble de couplage avec une ou plusieurs structures anatomiques de la colonne vertébrale. L~ensemble de couplage comprend un élément d~ancrage (12, 112), un élément de réception (20) destiné à recevoir l~implant, un élément siège (30, 130) disposé entre l~implant et l~élément d~ancrage et présentant une surface de maintien de l~implant (34), ainsi qu~un élément de fixation (40) doté d~une surface d~entrée en prise de l~implant (54). La surface d~entrée en prise de l~implant est maintenue de manière alignée par rapport à la surface de maintien de l~implant.

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