摘要:
A method of making a component of a spinal fixation system. The method may comprise providing a mixture of a powder of at least one metal or metal alloy and a polymeric binder. A metal-injection-molding process may use the mixture to form a component for a spinal fixation system. The components may have varying flexibility across their cross-sections. Also, components are provided that are produced by this process, such as spinal fixation rods and plates.
摘要:
A prosthetic assembly and method of implanting same, according to which a least one rod is secured to the spinal column. A spacer engages the spinous process of a vertebrae of the spinal column. The rod is connected to the spacer via an adapter.
摘要:
A composite spinal implant device including collagen and/or synthetic fibers impregnated with a bioactive formulation is disclosed. Also disclosed are methods of making the composite spinal implant devices, surgeries using the device, and kits containing the device.
摘要:
The forces exerted on a spinal implant by one or more coupling assemblies 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.
摘要:
One embodiment of the present application includes: performing a medical procedure on a segment of a patient's spine. This segment includes two vertebrae each in contact with a spinal disk positioned in an intervertebral disk space. A passage is formed that follows a pathway through the vertebrae and the intervertebral disk space. This passage extends from an extradiscal opening through one of the vertebrae along a path that turns to change direction. The tubular device is inserted in the passage and extends through the intervertebral disk space. A fluid material is introduced into the tubular device to at least partially fill it to provide a spinal prosthetic structure. Other embodiments and inventive aspects include other prosthetic device arrangements, implantation methods, systems, and techniques.
摘要:
The invention provides a fixation device for implantation in a patient to provide support to a body component. The fixation device includes an outer construct forming a pocket and a slurry disposed in the pocket. The slurry is comprised of magnetic particles. The slurry is responsive to an electric field to modulate stiffness of the slurry. A system is provided to generate the electric field. Further, a method is provided to use the fixation device.
摘要:
A prosthetic device and a method for inserting same between adjacent vertebrae, according to which two connected members are provided, one of which is formed by a relatively flexible material and the other of which is formed by a relatively stiff material.
摘要:
A surgical instrument assembly includes an inserter instrument and a driving instrument to engage an implant to a bony structure in a patient. The inserter instrument is positionable in a patient with the implant engaged thereto to position the implant at an operative site in the patient. A driving instrument is engageable to the inserter instrument to engage the implant to bony structure at the operative site. A template is provided and engageable by the driving instrument to facilitate preparation of the bony structure to receive the implant
摘要:
A vertebral rod has an elongated body extending along a longitudinal axis. The rod also includes a cavity extending the length of the body. Either the body or the cavity may have an asymmetrical shape about a centroid in a plane perpendicular to the longitudinal axis. Alternatively, both may have the symmetrical shape about the centroid. The body of the rod may be bounded by an exterior surface and the cavity. The body has a first bending axis that is perpendicular to longitudinal axis. The body also has a second bending axis that is perpendicular to the longitudinal axis and to the first bending axis. The body of the rod may be distributed asymmetrically about the first and second bending axes. Also, the rod may have a different bending stiffness about the first and second bending axes.
摘要:
A pivoting connector couples a vertebral member to a longitudinal member. An anchor is pivotally attached to a body by positioning a head of the anchor within a cavity in the body. A longitudinal rod is inserted into a channel also positioned within the body and axially aligned with the cavity. A retainer applies a force to maintain the longitudinal rod within the channel, however the force may be isolated from the anchor. The cavity is adjustable between a plurality of sizes that apply different resistances to pivoting movement of the anchor relative to the body. The adjustment may be performed before or during a surgical procedure. The adjustment may be performed by inserting different components or by rotating a threaded element to create more or less rotational interference.