摘要:
A diagnostic system is provided that occupies a small area, provides sensing and transmitting of various diagnostic indicia, and with the aid of a healthcare professional, diagnoses and responds to such measurements. In the context of the spine, the diagnostic system comprises a spinal implant situated between two adjacent vertebrae, an antenna for sending and/or receiving signals to and/or from a remote location, a sensor for measuring at least one diagnostic condition, an activating element that has the ability to affect the at least one diagnostic condition, a power source to provide power to the diagnostic system, and a network that electrically connects the antenna, sensor, activating element and battery source.
摘要:
In one form, a method for stabilization of a facet joint of the spinal column includes forming a cavity between adjacent bones defining the facet joint and positioning an implant in the cavity between the adjacent bones. In one aspect of this form, the method also includes positioning a bone anchor across the facet joint and engaging the bone anchor with each of the adjacent bones to force the bones toward one another and clamp the implant therebetween. In a further aspect of this form, the implant is a cancellous bone dowel and becomes fractured into a plurality of fragments upon being clamped between the adjacent bones and/or otherwise interacting with the bone anchor. In another form, systems and devices for performing percutaneous facet joint stabilization and/or fusion are provided. However, different forms and applications are also envisioned.
摘要:
A spinal implant includes a body defining a longitudinal axis and an outer surface. The outer surface includes a first portion configured to engage a first bone surface and a second portion configured to engage a second opposing bone surface. A first locking element has a center of rotation along a first axis offset from the longitudinal axis. The first locking element is rotatable relative to the body between a first, non-engaging configuration and a second engaging configuration such that the first locking element extends beyond the outer surface. Methods of use are disclosed.
摘要:
A bone screw and method of inserting a bone screw into a bone is disclosed. In one example, the bone screw includes a tip segment for creating a starter hole in the bone. A pilot segment is located proximally of the tip segment for creating a pilot hole in the bone after creation of the starter hole. The starter hole and pilot hole are created by a longitudinal pushing force exerted on the bone screw by the surgeon. A threaded segment is located proximally of the pilot segment for fixedly securing the bone screw in the bone by the use of a rotational force exerted on the bone screw by the surgeon. A head is located proximally of the threaded segment for allowing the bone screw to affix an implant or other soft tissue to the bone. In one embodiment the implant is a plate.
摘要:
A vertebral construct includes a first fastening element having a first portion and a second portion configured for engagement with tissue. A rod defines an elongated cavity configured to facilitate dynamic translation of the first portion therein relative to the rod. A second fastening element has a first portion fixedly connected to the rod. Methods of use are disclosed.
摘要:
A spinous process implant with two plates that are connected together with a post. The implant is configured for each plate to be positioned on outer lateral sides of spinous processes with the post extending through the interspinous space. One or both plates may be movable along the length of the post to accommodate different anatomies such as for relatively wide or thin spinous processes. The post includes an enlarged head at a first end to prevent the first plate from disassociating from the post in a first direction. The post also includes a boss at a second end to prevent the second plate from disassociating from the post in a second direction. Methods of attaching the implants to the spinous processes are also disclosed.
摘要:
An intervertebral disc space preparation guide comprises a spacer portion having a first recess and a first machining guide comprising a first bore. The first bore and the first recess are aligned and adapted to receive a first bone removal mechanism.
摘要:
A tissue extender includes a ring defining a proximal end opening to engage a head of a subcutaneous screw, a first extender portion coupled to the ring at a proximal end of the first extender portion, and a second extender portion coupled to the ring at a proximal end of the second extender portion. The first extender portion includes a first coupling portion disposed at a distal end of the first extender portion, and the second extender portion includes a second coupling portion at a distal end of the second extender portion. The first and second extender portions define two side openings disposed on opposite sides of the tissue extender. The distal ends of the first and second extender portions together define a distal end opening. The first coupling portion engages the second coupling portion when the tissue extender is in an extended state. The distal end opening is larger in the extended state than in an unextended state.
摘要:
A dynamic stabilization system for use with a spinal motion segment includes a first bone anchor assembly, a second bone anchor assembly, a resilient element, and a sheath. The resilient element includes an end portion engageable with the first bone anchor assembly and a resilient portion engageable with the second bone anchor assembly. The resilient element provides resilient resistance when the first and second bone anchor assemblies are moved toward one another and provides no resistance and is separable from the second bone anchor assembly when the first and second bone anchor assemblies are moved away from one another. The sheath surrounds the resilient portion and articulation surface of the second bone anchor assembly.
摘要:
There is disclosed a system for positioning a connecting element adjacent one or more bones or bony portions, such as the spinal column, through a minimally invasive surgical approach. The system generally includes at least one bone anchor engageable to the one or more bones or bony portions and at least one anchor extender removably engaged to the bone anchor. A connecting element is movable along a longitudinal axis of the anchor extender. In response to movement of the connecting element along the longitudinal axis toward the bone anchor, the anchor extender flexes, bends or otherwise reconfigures to allow a leading end of the connecting element to be rotated away from the longitudinal axis so that the connecting element can be positioned in a transverse orientation to the longitudinal axis along the one or more bones or bony portions at a location adjacent the bone anchor.