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Load-sharing bone anchor, dynamic vertical rod and assemblies for dynamic stabilization of the spine

A spinal rod and spine technology, applied in the field of spinal implant systems, can solve problems such as unreliable anchoring systems, poor durability, and complicated implant procedures

Inactive Publication Date: 2011-10-12
SPARTEK MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, existing devices and methods have several disadvantages such as: complex implantation procedure, lack of flexibility to adapt to various patient anatomy, need to remove tissue and bone for implantation, increased stress on spinal anatomy, anchoring Unreliable system, poor durability, and few options for correction

Method used

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  • Load-sharing bone anchor, dynamic vertical rod and assemblies for dynamic stabilization of the spine
  • Load-sharing bone anchor, dynamic vertical rod and assemblies for dynamic stabilization of the spine
  • Load-sharing bone anchor, dynamic vertical rod and assemblies for dynamic stabilization of the spine

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Embodiment Construction

[0078] The present invention includes a general spinal implant system and method capable of dynamically stabilizing the spine and preserving spinal motion. Alternative embodiments are available for spinal fusion. One aspect of the present invention is to restore and / or preserve the natural motion of the spine including quality of motion as well as range of motion. Furthermore, another aspect of the present invention is to provide load distribution and stabilization of the spine while preserving motion.

[0079] Another aspect of the present invention is to provide a modular system that can be customized according to the patient's needs. Another aspect of various embodiments of the present invention is the ability to stabilize bi-, tertiary, and / or multi-stage spines by selecting appropriate components suitable for implantation in the patient. Another aspect of the present invention is the ability to provide higher stiffness and fusion to one level or portion of the spine whi...

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PUM

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Abstract

A versatile dynamic bone anchor and spinal rod for use in a dynamic stabilization system to support the spine while providing for the preservation of spinal motion. The dynamic bone anchor provides load sharing while preserving range of motion. The dynamic bone anchor includes a deflectable post connected by a ball-joint to a threaded anchor. Deflection of the deflectable post is controlled by a compliant member. The dynamic rod is connected to the dynamic bone anchor by a joint which permits relative movement of the deflectable post and rod reducing the stress exerted upon the bone anchors and spinal anatomy.

Description

Background technique [0001] Back pain is a prominent clinical problem and the annual cost of treating it with surgery and drugs is estimated to exceed $2 billion. One method used to treat a wide range of degenerative spinal disorders is spinal fusion. Implantable medical devices designed to fuse the vertebrae of the spine for treatment have grown tremendously over the past decade. However, spinal fusion has several disadvantages, including reduced range of motion and accelerated degenerative changes near the fused vertebrae. [0002] Alternative devices and treatments have been developed for treating degenerative spinal diseases while preserving motion. These devices and methods of treatment offer the possibility of treating degenerative spinal disease without the disadvantages of spinal fusion. However, existing devices and methods have several disadvantages such as: complex implantation procedure, lack of flexibility to adapt to various patient anatomy, need to remove tis...

Claims

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Application Information

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IPC IPC(8): A61B17/70A61B17/58A61B17/86
Inventor 查尔斯·J·温斯洛史蒂文·T·米切尔约翰·J·弗林詹姆斯·F·楚克尔曼肯·Y·赫苏亨里·A·克雷斯H·亚当·R·克雷斯
Owner SPARTEK MEDICAL