Methods for navigating an instrument through bone

摘要

System and methods for channeling a path into bone include a trocar having a proximal end, distal end and a central channel disposed along a central axis of the trocar. The trocar includes a radial opening at or near the distal end of the trocar. The system includes a curveable cannula sized to be received in the central channel, the curveable cannula comprising a curveable distal end configured to be extended laterally outward from the radial opening in a curved path extending away from the trocar. The curveable cannula has a central passageway having a diameter configured to allow a probe to be delivered through the central passageway to a location beyond the curved path.

主权项

1. A method for channeling a path into bone to a treatment location in the body of a patient, comprising:
deploying a trocar through a cortical bone region and into a cancellous bone region of a vertebral body, the trocar having a proximal end, a distal end and a central channel disposed therebetween; wherein the trocar comprises a radial opening at the distal end of the trocar, the radial opening being in communication with the central channel; delivering a curveable cannula through said central channel and to said radial opening; deploying the curveable cannula laterally outward from the radial opening in a curved path extending away from the trocar, wherein the curved path is generated through at least a portion of the cancellous bone region of the vertebral body; inserting a channeling stylet through a central passageway in the curveable cannula; creating a working channel beyond an end of the curved path with the channeling stylet; removing the channeling stylet; delivering a treatment device through the central passageway in the curveable cannula to a treatment location within the working channel beyond the curved path, wherein the treatment location comprises a basivertebral nerve associated with the vertebral body; and delivering a therapeutic amount of thermal energy to the treatment location sufficient to denervate at least a portion of the basivertebral nerve using the treatment device.